RE: How can I put a button that displays another form to a fastab?
Hi Jennifer,
I'm coming late to the party, but it still might be helpful:
Once you created the form extension, navigate to the desired fast tab, right click and add a menu item button inside a Group (or create a brand new one depending on your needs).
Once you have that, create a display menu item, and point it to the form you wish to open. In case this new form is a dialog, you can set its Pattern under the Design node to 'Dialog - Basic'.
Once you have that, add a reference to that menu item on the button you created on the extension.
If this is not the case, let me know and I can walk you through it.