Manually Disable Cloud Access

Is there a way that I can disable cloud access from the dashboard for all my users and then re-enable it with no issues later on? I want to create a backup of certain files using a USB backup device, but since the EX4 doest allow such device to be private I dont want them to have access to it while the large backup is being conducted. 

I know in the dashboard there is a cloud access switch and dashboard cloud access switch. I just dont want to have to provide access codes when I turn it back. I was just curious if anyone might know how to do this.

You can turn Off remote access for all users, just turn it On when you want to enable it again, there is no need to create codes again. Check page 113 of the manual for more information.

Thank you for your response.