Branch permissions to limit write access to specific folders

Hello. Our reposotory has two root folders. Example:

• Sources
• Misc

Also we have two branches. Example:

• develop
• master

And two group:

• master-commiters (can push to master and develop branch)
• develop-commiters (can push to only develop branches)

I want to grant permission to Misc project for group develop-commiters into master branch. But I don't want to grant permissions to push to another folders in master branch.

It would be great if you will extend branch permission rules and add permissions to folders.