Not exactly sure what you mean? Posts in the thread should automatically bump the thread.
Probably wants the "Bump Thread" plugin implemented
which allows users to bump their threads without posting
Ah unsure if there is even something out there that does this.
Yes, I meant to bump threads without posting every time as sometimes you just want to bump the thread and have nothing more you want to add.
D Bump Thread
Extend MyBB - D Bump Thread
Newpoints--Bump-Thread
GitHub - Sama34/Newpoints--Bump-Thread: With this plugin, you can easily allow your users to bump their own threads without replying charging them with a certain amount of money.
[Banxix] Bump Thread
Unmaintained - [Banxix] Bump Thread | XenForo community
All those are for another forum software. Not something we can use.