The access level of your login will determine which level of the companies reports you can access:
The uneven numbers are Read-only and the even numbers have full access.
Level 1 and 2 = User
Level 2 and 4 = Department
Level 5 and 6 = Branch
Level 7 and 8 = Company.
Levels 1,2,5 and 7 have "View" access while 4,6 and 8 have "Modify access".
So it depends on what kind of access you want to grant the User