I think I get what you're saying. Not sure but it's a Monday.

If the above doesn't work then change it to "post" so it'll look like:
Code:
<if condition="is_member_of($post,x)">
postbit_code_here
</if>
It checks both primary and secondary Usergroups. You can add multiple Usergroups here (e.g., x, y, z). Change "x" to ID.
Basically the code states that if you're in Usergroup "x" then this code will show up for everyone to see. Unless, of course, you've set another conditional to allow only select groups to see it.