Public Users Update A Record

[Gospel_Musician]

So, I have 4-5 Beta testers for some software. I have a list of things that I want them to test. Once they test the stuff, they can upload videos, comments, etc...But if I share one table with several users, then they will overwrite their notes. How do I use One Table, but share with multiple users and not allow each user to see or update each other's notes? 

I guess, the short question is, how do I share among four users, without making four different Tables. Is there a way to make one table, but isolate users input from each?

[Gospel_Musician]

I guess, it would be good to create a view, but only allow the particular user to see the view. I don't see that as an option.