I know this question has somewhat been asked before, but I could not find a definitive answer for it.
I am attempting to make an interactive, custom-designed UI menu for a google doc add-on. I would like to be able to code in items such as pull-down menus or checkboxes. Are these possibilities with this discontinuation of the UI Service? And if so, how would I go about coding this? Even a link to a place that might have suggestions would be a help. Thanks!