EDIT: oops
anything's possible :)
Just use:
if ($userlevel >=QA_USER_LEVEL_ADMIN) {}
in your qa-theme.php file whereever you need it. You will need to understand php though, and get $userlevel via the post's userid. This entails writing a function to get the author's level via their userid. I don't think such a function exists in Q2A, but if you are using a standalone install, it's as simple as querying the ^users table. If you're using wordpress integration, check out the functions in qa-external-users-wp.php