You could add a template modification for
message_macros
.
e.g.
Search type:
Regular expression
Find:
/<xf:userbanners .+ \/>/isU
Replace:
HTML:
$0
<xf:if is="{{ $xf.visitor.isMemberOf(123) }}">
YOUR LABEL
</xf:if>
If you choose this method, you have to replace
123
with the
user group ID of the user group the users with the badge/label belong to.
You cold also work with profile fields, that only administrators can change.