diff --git a/src/program/ProgramInit.js b/src/program/ProgramInit.js
index e363c9f..d4db00f 100644
--- a/src/program/ProgramInit.js
+++ b/src/program/ProgramInit.js
@@ -55,15 +55,49 @@ module.exports = Class( 'ProgramInit',
     'public init'( program, doc_data )
     {
         const defaults = program.defaults || {};
+        const data = doc_data || {};
+        const groups = program.meta.groups;
 
-        // initialize to an array with a single element of the default value
-        return Promise.resolve(
-            Object.keys( defaults ).reduce(
-                ( data, key ) => ( data[ key ] === undefined )
-                    ? ( data[ key ] = [ defaults[ key ] ], data )
-                    : data,
-                doc_data || {}
-            )
-        );
+        Object.keys( program.groupExclusiveFields ).forEach( group =>
+        {
+            let i = program.groupExclusiveFields[ group ].length;
+
+            while ( i-- )
+            {
+                const field = program.groupExclusiveFields[ group ][ i ];
+                const default_value = defaults[ field ];
+
+                if ( !defaults.hasOwnProperty( field ))
+                {
+                    continue;
+                }
+
+                // Initialize with existing document data if any
+
+                // If no document data, initialize with default value
+                if ( data[ field ] === undefined )
+                {
+                    data[ field ] = [ default_value ];
+                }
+
+                // If min rows on the group is greater than the data
+                // currently in the bucket, then populate the rest
+                // of the data with the default data until the
+                // arrays are the same length
+                if ( groups.hasOwnProperty( group ) &&
+                     data[ field ].length < groups[ group ].min )
+                {
+                    let index = data[ field ].length;
+
+                    while ( index < groups[ group ].min )
+                    {
+                        data[ field ][ index ] = default_value;
+                        index++;
+                    }
+                }
+            }
+        });
+
+        return Promise.resolve( data );
     },
 } );
diff --git a/src/ui/group/GroupUi.js b/src/ui/group/GroupUi.js
index 21824f8..ac506a8 100644
--- a/src/ui/group/GroupUi.js
+++ b/src/ui/group/GroupUi.js
@@ -791,8 +791,13 @@ module.exports = Class( 'GroupUi' )
             : $element;
     },
 
-
-    'public hideField': function( field, index )
+    /**
+     * Hides the field based on field name and index
+     *
+     * @param field
+     * @param index
+     */
+    'virtual public hideField': function( field, index )
     {
         if ( this.isFieldVisible( field, index ) === false )
         {
@@ -813,8 +818,26 @@ module.exports = Class( 'GroupUi' )
             .applyStyle( this._naStyler );
     },
 
+    /**
+     * Returns a boolean depending on if there are visible fields
+     * based off of the visCount
+     *
+     * @param index
+     * @returns {boolean}
+     */
+    'protected hasVisibleField'( index )
+    {
+        return this._visCount[ index ] > 0 ? true : false;
+    },
 
-    'public showField': function( field, index )
+
+    /**
+     * Shows the field based on field name and index
+     *
+     * @param field
+     * @param index
+     */
+    'virtual public showField': function( field, index )
     {
         if ( this.isFieldVisible( field, index ) === true )
         {
diff --git a/src/ui/group/StackedGroupUi.js b/src/ui/group/StackedGroupUi.js
index 0da7145..bf0eb9b 100644
--- a/src/ui/group/StackedGroupUi.js
+++ b/src/ui/group/StackedGroupUi.js
@@ -100,4 +100,43 @@ module.exports = Class( 'StackedGroupUi' )
 
         return this.__super( index );
     },
+
+
+    /**
+     * Hide the header if there are no visible fields
+     *
+     * @param field
+     * @param index
+     */
+    'public override hideField'( field, index )
+    {
+        this.__super( field, index );
+
+        if ( !this.hasVisibleField( index ) )
+        {
+            const header = this._$container.find( 'dl' )[ index ];
+
+            header.classList.add( 'hidden' );
+        }
+    },
+
+
+    /**
+     * Show the header if there are visible fields
+     *
+     * @param field
+     * @param index
+     */
+    'public override showField'( field, index )
+    {
+        this.__super( field, index );
+
+        if ( this.hasVisibleField( index ) )
+        {
+            const header = this._$container.find( 'dl' )[ index ];
+
+            header.classList.remove( 'hidden' );
+        }
+
+    }
 } );
diff --git a/test/program/ProgramInitTest.js b/test/program/ProgramInitTest.js
index 581a5c4..8d3ee90 100644
--- a/test/program/ProgramInitTest.js
+++ b/test/program/ProgramInitTest.js
@@ -34,6 +34,12 @@ describe( 'ProgramInit', () =>
         {
             label:    "initializes defaults",
             defaults: { a: "one", b: "two" },
+            meta: {
+                groups: {}
+            },
+            groupExclusiveFields: {
+                Something: [ "a", "b" ]
+            },
             doc_data: {},
             expected: {
                 a: [ "one" ],
@@ -43,18 +49,36 @@ describe( 'ProgramInit', () =>
         {
             label:    "does nothing with no data or defaults",
             defaults: {},
+            meta: {
+                groups: {}
+            },
+            groupExclusiveFields: {},
             doc_data: {},
             expected: {},
         },
         {
             label:    "produces empty object given undefined data",
             defaults: {},
+            meta: {
+                groups: {}
+            },
+            groupExclusiveFields: {},
             doc_data: undefined,
             expected: {},
         },
         {
             label:    "keeps existing data with defaults",
-            defaults: { foo: "init" },
+            defaults: {
+                foo: "init",
+                bar: "test"
+            },
+            meta: {
+                groups: {}
+            },
+            groupExclusiveFields: {
+                Something: [ "foo" ],
+                SomethingElse: [ "bar" ]
+            },
             doc_data: { bar: [ "baz" ] },
             expected: {
                 foo: [ "init" ],
@@ -62,22 +86,90 @@ describe( 'ProgramInit', () =>
             },
         },
         {
-            label:    "keeps existing doc data with no defaults",
+            label:    "keeps existing data with no defaults",
             defaults: {},
+            meta: {
+                groups: {}
+            },
+            groupExclusiveFields: {
+                SomethingElse: [ "bar" ]
+            },
+            doc_data: { bar: [ "baz" ] },
+            expected: {
+                bar: [ "baz" ],
+            },
+        },
+        {
+            label:    "does not overwrite existing data with defaults",
+            defaults: { foo: "init" },
+            meta: {
+                groups: {}
+            },
+            groupExclusiveFields: {
+                Something: [ "foo" ]
+            },
             doc_data: { foo: [ "bar" ] },
             expected: {
                 foo: [ "bar" ],
             },
         },
         {
-            label:    "does not overwrite existing data with defaults",
+            label:    "does not overwrite existing data with defaults and multiple rows",
             defaults: { foo: "init" },
-            doc_data: { foo: [ "bar" ] },
+            meta: {
+                groups: {
+                    Something: {
+                        min: 3
+                    }
+                }
+            },
+            groupExclusiveFields: {
+                Something: [ "foo" ]
+            },
+            doc_data: { foo: [ "bar", "baz", "test" ] },
             expected: {
-                foo: [ "bar" ],
+                foo: [ "bar", "baz", "test" ],
             },
         },
-    ].forEach( ({ label, doc_data, id, defaults, expected }) =>
+        {
+            label:    "initializes with default bucket data",
+            defaults: { foo: "init" },
+            meta: {
+                groups: {
+                    Something: {
+                        min: 5
+                    }
+                }
+            },
+            groupExclusiveFields: {
+                Something: [ "foo" ]
+            },
+            doc_data: {},
+            expected: {
+                foo: [ "init", "init", "init", "init", "init" ],
+            },
+        },
+        {
+            label:    "fix missing bucket data values",
+            defaults: { foo: "init" },
+            meta: {
+                groups: {
+                    Something: {
+                        min: 5
+                    }
+                }
+            },
+            groupExclusiveFields: {
+                Something: [ "foo" ]
+            },
+            doc_data: {
+                foo: [ "1", "2", "3", "4" ],
+            },
+            expected: {
+                foo: [ "1", "2", "3", "4", "init" ],
+            },
+        },
+    ].forEach( ({ label, doc_data, id, defaults, meta, groupExclusiveFields, expected }) =>
     {
         it( label, () =>
         {
@@ -86,6 +178,8 @@ describe( 'ProgramInit', () =>
             const program = {
                 id:       "foo",
                 defaults: defaults,
+                meta: meta,
+                groupExclusiveFields : groupExclusiveFields
             };
 
             return expect( sut.init( program, doc_data ) )