I have updated my post, now you can!
Just replace the X's with the usergroups you want, and if you wish you can add/remove more numbers!
Examples:
PHP Code:
<if condition="in_array($userinfo[usergroupid], array(4,5,6))">
PHP Code:
<if condition="in_array($userinfo[usergroupid], array(1,2))">
PHP Code:
<if condition="in_array($userinfo[usergroupid], array(1))">
PHP Code:
<if condition="in_array($userinfo[usergroupid], array(1,2,3,4))">