Add or Remove Client Restrictions 

Steps:   

1. Select Master Files > Employees.
2. Select an Employee Code.
3. Click on Settings > Client Restrictions
4. On the Client Access Restrictions page, check the box to the left of No Restrictions currently applied, check to apply restrictions
5. On the Client Access Restrictions page use the  >  symbol to grant access and  <  to remove access to a client.  
6. Select SAVE