Make seprate Three Sub-admin panel for not interrelate three admin

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 these three sub-admin have a only access of only modules (Dashboard, Sales, Catalogue, Customers and Reports). My requirement is all three sub-admin has a separate admin panel of 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 others. Our aim is to make separate view of backend admin for all three sub-admins. E.g. xyz1 has a separate admin panel view and he can’t seen either xyz2 & xyz3 admin panel & vice versa.