It's currently done by number of posts. I have a few new members who I want to give a higher rank
Is there a back-end way to do this, and could you fix this on the front end eventually?
It's kind of silly that there's no way for the admin to distinguish a member as "Trusted" or "Famed". The reputation system being based off number of posts alone doesn't make much sense.
I'm really sorry but currently, ranks are being counted based on a number of posts. This is already in our to-do list. We'll try to add it in the upcoming version.
Please update to wpForo 1.6.2 version and find option to set different reputation to users in that user Edit profile page in Dashboard. More info in 1.6.2 version summary: https://wpforo.com/community/wpforo-announcements/wpforo-1-6-2-is-released/