Editing multiple databases

Hello, I am sitting here trying to make an addition to my app and this one is more complicating then I thought it would be. I made a properties database. So basically the the user buys a property it links up with the users database. Basically saying that the User has a bought property. and within the properties database I have it where it says that the property is bought.

How I have it set up it the user clicks “sign” and I want it to save but I’m only getting the option to Parent Group the Properties. I don’t know much about parent groups within parents groups so that could be my issue but it anyone understands what I’m trying to say it would be helpful.

This is a tricky one to understand. Feel free to add me on Discord (NicPagonis#0001) or message me on the Bubble forums.