Cross posted on the AGOL page:
I feel kind of bad because I've suggested other people use this workflow in the past, and then this morning I actually tried to do it and it's impossible on both AGOL and Enterprise.
I'd like to be able to set Forms for Field Maps from the default visualization tab of the item details page.

For example, if I have a layer that's going in 10 different web maps (e.g. each user makes his own map to go into the field), I want to 1) make sure that each user is collecting the same data and 2) only configure the forms once.
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Tool bar in default Visualization | Toolbar in Map Viewer |
Please add in the ability to set default forms on the visualization tab of Item details.