Pinning post in category

I cant seem to figure out how to pin a post at the top of a category and it only be in that category and not in all discussions.

Here is my forum and as you can see all the stickys are listed and I only want them to be in the category they belong in.

Digeratimvp by default Flarum pins are global. There is an extension changing this behaviour: https://discuss.flarum.org/d/27888-stickiest