Filter custom DocType Project Task

ERPNext
1

Good afternoon
I created a new DocType in Project - Task_new (custom). I created the user1 field in the form (link → user). But all created documents are visible to everyone, but only those specified in the user1 field need to be seen. How to do this?

2

please check this maybe it helps you Only assign interview can see not other - #3 by Jeel