Adding more concurrent users to your account
At the time of this writing, more users cost $1/user/month.
To add on users goto vyew.com/upgrade OR, if you are logged in, MAIN MENU > Account Settings > Upgrade Add-ons link.
In the Add-ons section of the upgrade screen, select how many users you would like to add:
After completing the upgrade/payment screens, you account will be instantly upgraded.