[BirdOPrey5]

You could edit the following templates:

forumhome_forumbit_level1_post
forumhome_forumbit_level1_nopost
forumhome_forumbit_level2_post
forumhome_forumbit_level2_nopost

Surround each entire template in a conditional:

<if condition="in_array($forum[forumid], array(3, 4, 5, 6))">
original code here
</if>

Where 3, 4, 5, and 6 are the forum ids of the only forms you WANT to show on the forumhome. Make sure you include the category forumids as well.

All other forums will not display on forumhome but will work if you link to them some other way.