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A Packet consists of a Parent and any number of Children. To create the Parent, edit a Form Template and select 'Yes' for the Form Packet option.
Next, edit the Form Templates you wish to be Children of this Packet, and allocate them to the Parent. Note, a Template can be the Child of more than one Parent.
When a Form is created from the Parent Template, it will be shown with a tabbed view. The first tab is the Parent Template, the others are the Children.