Question : I have invited B as payroll user but why he can only see a few employees?
Possible Reason :
Employee Authorization is not set for this Payroll User.
Solution :
1) Go to Tools > User Setting > User Authorization
2) Click on the edit button for the selected email address.
3) Go to Authorized Employee Groups tab and now you can see this user has only authorization for WAREHOUSE employee group.
4) Check on the checkboxes of employee groups that you wish to allow this payroll user to access and process payroll. Then click on Save.
Now the payroll user should be able to view the employees of authorized employee groups and process their payroll.
--Source from AutoCount Wiki --