Sorry for my bad english...
I set from Admin Panel that users can edit their post only for 15 min.
So, i have a phpbb3 board, latest version.
In it, i have a section buy and sell.
Only in this section (forum), i want that user to can edit permanently their first post on topics that their open. Only in topics open by them. And can change only the first post.
The topic of course may contain more than one post.
So they can do an update price for a products, add a new product, because visitors look at first post on an ad for sale.
I want that in this section (buy and sell), user to can locked their own open topics (only topics started by her), by this problem i solved from forum permission.
I see this work on a phpbb3 forum, so it is possible. And is great.