Employee Permissions

[saadayubmir]

I have a scenario here, I have 4 different Categories in my store:

 

- Electronics

- Toys

- Clothes

- Footwear

 

Now i want to assign 1 employee per category with full access to his/her category but no right on other 3 categories. How can i set permission to sub-category level. Any solution for this or any module available ??