ApplicationEditor forms now let you manage available forms and edit the current form:
{F959025}
There's a new (bare bones) list of all available engines:
{F959030}
And if you jump into an engine, you can see all the forms for it:
{F959038}
The actual form configurations have standard detail/edit pages. The edit pages are themselves driven by ApplicationEditor, of course, so you can edit the form for editing forms.