Restricting editing to only items you've created

[Jeff_Hager]

It can be done. I think this is a good explanation and example of what you are looking for.

FInstagram Profiles (Bug?)

I’ve updated the FInstagram sample to use the new Relation columns in the Data Editor. You can make a read-only copy of the user profiles by mirroring the Profile sheet in another tab, but this is a bit too advanced to include in the template. Create a second tab in your sheet and put in cell A1: ={Profile!A:Z} to create a copy of the profile sheet. Now use this as the read-only profiles in the app that cannot be edited.