I had an App where the :Show overlay actions in dashboards is ON.
I create a Form form from a Slice.
Then I create an interactive dashboard, but some how, in the calendar view, when I click on the add bottom, it opens the System form and not the form from the slice table.
And I can´t create and action from a slice table (this could be a good new feature).
You need to first create a form view for your slice. Then you can create your own “Add” action button like LINKTOFORM(“Slice_Form”,“ID”,INIQUEID())