huseyinfiliz This extension is suppose to be just a "patch", all the functions are already in the core. You should be able to toggle between: allow edit totally, allow edit for 10 minutes and allow edit until someone has replied. (can be seen in the first image, you will see this when you go to the Permissions tab, which is at the left side of admin panel)
For customising time limit, personally I feel that the 10 minutes provided in core should be good enough, most of the time when people see a mistake in their title, they would rename it right away
If there is really a need for customising time limit, I think would be better to create a new extension for it, as this extension should be abandoned once this issue is fixed