Can I set different edit content time per forum? I see that here on IPS there are forums that allows editing up to 2hours and forums(messenger too) that allow over 24h

You can't set it different from one category (or forum) to another, but you can set it different for groups.

For example, the group "New Members" can have an edit time of 2 hours while the "Members" group can have an edit time of 24 hours. But it's the same edit time for every category, forum and topic on your board for that group.

Maybe they changed. But i know that in Feedback and Ideas forum is/was 2h

But would be nice to have different time per forum, not member only. Useful when authors need to update their first post in a topic (title and following posts shouldn't be changeable though)

Damn. Per-forum config here would be awesome. I have a temporary group that I put users in to allow their editing for a day or two. Clunky as hell.