Secondary Usergroup

[Hex_legend]

What is the code to state whether someone is a member of a secondary usergroup?
I know for primary its:
<if condition="is_member_of">
etc,
but if I wanted to show someone has confirmed as over 18 by showing an image, what would do this?

[Dismounted]

is_member_of() will check both primary and secondary usergroups. That's why the function exists.