[Lynne]

So you aren't talking about the Quick Navigation at all, you are talking about the forum listings on the forum.php page?

Do you currently have the sub-forum showing under the forum only it isn't indented? Do you have your settings correct in AdminCP > Settings > Options > forum listings display options ? What are your settings there? If you have it greater than 2, then you need to copy the "forumhome_forumbit_level2_post" and "forumhome_forumbit_level2_nopost" templates and name them as level3 (if you have that set to 3) and level4 (if you have it set to 4), etc. Once you copy the template, you may edit it however you want to be indented and such.