Scenario
The client requires to Store some confidential data and it should be only accessed by few employee of the organisation.
Solution
We have to create a folder and restrict it by a group as the Folder can only restriced by fllowing and not employee:
Class
Department
Location
Subsidiary
Group

Here as the employee can be bought as a group create a group and dd the names of employee in the group.
Creation of Group.
Navigation: List> Relationship> Group
Select Static type of Group and choose Members as employee and click continue button:

Then provide the name for the goup and select the members for the group and save.

Once Goup is created create folder and restrict it by the group which we have created