Access to Explores

I have a scenario where User A and User B are in the same team(group). But user A should be able to view the explore X while User B should not be able to view the explore X.

I tried using the access_grant, but it almost seems impossible. I do not want to create a new explore for another user.

Is there any way I could accomplish this ?

Please help!

You can create access grants per email address, so why did it seem impossible?