Single Touch Payroll

Are you going to process their payroll every pay day?  Are all 5 client datafiles on your computer?  If the answer is yes, and you are processing the payroll - then I would setup just a portal account for yourself and add the 5 clients (tiles) to your portal - I would only have them setup portal access if they are actually doing the payroll and lodging the files themselves... if you are doing it - then you will need to add your BAS or TAX agent details to the Company & Advisor window and there will be an extra declaration step each time you lodge - asking you to confirm that you have the necessary and appropriate authority to lodge STP on their behalf.  But do not add yourself as an advisor if they are lodging the STP files themselves...