You could try to use the parameter [tt]&displayStart[/tt] .
Let’s assume you want to see the menus of the ressources 22, 44 and 55 on one page, write one Wayfinder call for each of them into this page:
[!Wayfinder? &startId=`22` &displayStart=`TRUE`!]
[!Wayfinder? &startId=`44` &displayStart=`TRUE`!]
[!Wayfinder? &startId=`55` &displayStart=`TRUE`!]
If [tt]&displayStart[/tt] is set to TRUE, Wayfinder uses the template parameter [tt]&startItemTemplate[/tt] . By default this is
<h2>[+wf.linktext+]</h2>[+wf.wrapper+]
You can modify it to your needs, but don’t omit [tt][+wf.wrapper+][/tt] which guarantees the display of the menu items.