I too are looking to do this, i’ll be watching this post for an answer!
I’m new to this but I think that you have to add a sidebar into the member-page. I haven’t got the solution you’re searching for but this is a lead to follow:
You have to modify the theme you’re using so that a sidebar shows. You can do this in
/bp-themes/yourtheme/header.php
Add:
<?php get_sidebar( );
At the end of the file.
This will probably not work so well with uncustomized themes. There’s no room for the sidebar to show up. You’ll have to modify the look so that the sidebar shows correctly.
I read about some plug-in that would give you the ability to do this. Search for buddypress in the plug-ins repository.