I am working on a similar problem. I want to conditionally display a form section tab dependant on a attribute (dropdown) value. I want the form section tab to show/hide when the user changes the value of the dropdown (i.e it should show/hide "live" in the form withoug saving, closing etc.).
I can hide the attributes with a read protect rule but the tab is still displayed. I have tried combining a read protect rule with the form section conditional not visible when settings and it kind of works but it´s not ideal. Is there another way to achieve this?