I am a beginner.please guide for the task
2 collections: Users, Profiles (Profiles has UserRef field)
Page1: Signup - Updating Users collection
Page2: Input Name - Storing in profile collection
Page3: Input Hobby - I need to store in the same document created in Page2, but different field.
I am unable to get the Profiles -> document reference. Once I get it, how to update the document to update only one field in existing documents? What is the best way to do it?