Workflow tips? Creating templates in Rush? Creating new overlays/graphics in the menu?

Hey everyone, I work for marketing in the event industry. 

I constantly have to cut up live footage to make video ads. I love adobe rush cause most of my ad work is on social media. However, I don't see a way to implement my formula easily -- is there a way to create templates? 

Also, is there a way to build after effect like templates or templates with code -- such as creating my own graphics or overlays and adding it to the built-in menus in Rush. 

Appreciate any workflow tips for those who have to make a bunch of videos a week to a formula.