Functioning

Hi, Alex

How can I hide a post when the user is conditioned by a meta or another role?
For example, I have a user who can only see the information about the canada posts because I have put him a custom canada role and within canada he can only see the ontario posts, generating another role or meta.
I don’t know if I’m explaining myself correctly? What I mean is that you can hide the information not only by role, but by another variable factor. How would you solve this?
What do you recommend?

Thanks in advance for your help.