To create systems in your Network Admin account, select 'Systems' from your Management Panel.
Type the name of the new system in the 'Create A New System' field and assign a User Limit for the system. Then, click the blue "Create System" button.
Once the system is created, you'll receive a confirmation message and the new system will appear in your Systems list. The Systems list is sorted alphabetically and you can always filter your systems by System Name or Network.
Now that the system is created, use the System Details button () to edit the system's settings.