How do I limit the time a user can edit their threads and posts?

[HydraulicJack]

How do I limit the time a user or user group can edit their threads and posts (while keeping it editable by Moderators and Administrators?
Thanks!
HJ

 

[Sheldon]

User Group Perms

 

[HydraulicJack]

EXCELLENT many thanks, Stewart and to Jake for the confirm!

 

[HydraulicJack]

EXCELLENT many thanks, Stewart and to Jake for the confirm!

PS, and stewart, thanks VERY much for including the image. Without it I'd still be lost in space.