I created a one main admin account name xyz ( Full Access of all modules) and three different sub-admin user account names are xyz1, xyz2 and xyz3 and this three sub-admin have only access of only modules (Dashboard, Sales, Catalogue, Customers, and Reports).
My requirement is all three sub-admin has a separate admin panel of the module of because all three sub-admins are sited in three different our country offices. 
So, obliviously they are individual sales, customers, and products and they are not interrelated to each other. 
Our aim is to make the separate view of backend admin for all three sub-admins. E.g. xyz has a separate admin panel view and he can’t see either xyz1 & xyz2 admin panel & vice versa.