Log into your my.ytel Portal. Select “My Products” at the top to the right side of your dashboard.
Click on the "X5" tile
Click on "Add Seats" under the "Edit your service" section
Enter the amount of seats that need to be added and then continue through the payment process to complete purchase. Once complete, the account will be charged the appropriate amount and the additional Seats/Licenses will be added to the X5 system.