[memb_is_admin]

The below has content to be shown to both Admins and regular users.

[memb_is_admin]
   Information to be shown to admins.
[else_memb_is_admin]
   Information to be shown to users who are not admins
[/memb_is_admin]

The below shows content exclusively to admins.

[memb_is_admin]
   Information to be shown to admins.
[/memb_is_admin]