I have an app where users will have to input their names into each entry. I would like to prevent any form of impersonation. How can I tag their names to their User account? Is it an add-on service where I have to upgrade to a higher level plan?

I would like to create an Inventory App, where my Users (signed-in) are able to update the Inventory whenever they add / remove items from the store. So far I am able to edit the Item Qty in the app, but it does not register who was the one to edit t...