If you want to know what access tags are, go here

First, go to "My magazines" and then "Edit magazine".

Scroll down to "Access tags" and add the tags you want. 

You also need to add this access tag to the users who should be able to access the magazine. Learn how to do that here

Also the magazine needs to be blurred, otherwise anyone can view it without having the access tag. Learn how to blur a magazine here

Learn how  to add an access tag to a reader here

Did this answer your question?