How to add the option for adding fields?
I would like to add an option in the drop-down menu, or add a button, to the layout so that in Browse mode, the user can choose to repeat a field or not.
For example, if the user only has one entry for the field, then there is no need to repeat the field. If the user has 2 entries, then the user chooses to repeat the field once, and so on.. How may I implement this in FileMaker Pro Advanced 13? Thanks!
You don't. Dynamically adding more fields, if it were possible, would be a very bad idea.
What you do is set up a related table for this field. The user can then add as many related records as they need to record such repetitive data. A portal is most often used for this, but other options are also possible.