Sharing a folder into a Group of Users in Active Directory
Open Active Directory
Star>Run>das.msc
Create a Group
Right click on the Domain > New > Group > Group Name (‘Enter your preferred name’), Group Scope is Global, Group type is Security > Ok
Add Members to the Group
Add Share Permission
Righ click on the Shared Folder > Properties > Sharing > Permissions > Share Permission (‘Authenticated User:ALL’) > Apply
Add Security
Righ click on the Shared Folder > Properties > Security > Add the new security Group > Apply
Reference here (Best practices for AD and share permissions)