Group Specific Message?

[SynTaX404]

I need help adding a Message in the header that only banned users can see, Can someone help me with this issue?

[SEOvB]

Can the built in notices for 3.7 work for banned users?

[SynTaX404]

Explain how to get to it.

[SEOvB]

AdminCp -> Notices -> Add New Notice

[Twilkey]

Where are you wanting to add it?

You can just add a conditional.

<if condition="is_member_of($bbuserinfo, X)">
<div>Whatever</div>
</if>

Replace X with the id number of the banned usergroup.