Question - How do I assign an additional role to a member of staff?
Answer - Please be aware you need the System Administrator role (sysadmin) to be able to do this. Go to Admin>Personnel and click on the green icon "Staff" Select the member of staff from the drop down list and click on "Change password/roles" under where it says "SP Logon: Yes"
It is important to note that if other roles are already selected, you must hold down the CTRL key (for windows) or CMD (for mac) as you click the new roles to prevent you from removing current allocations whilst clicking on the additional role. Once complete, click on "change" to update the profile.