Hey there, ALARMNETADMIN.

Have you already tried to follow what @Rustler provided? If not, allow me to provide you that steps on how to do it.

Here's how:

1. Go to Customers menu at the top, then select Customer Center in the drop-down.

2. Click New Customer & Jobs on the upper left, then New Customer.

3. On the CUSTOMER NAME, enter the group name, then select OK.

4. Right-click the name of the group that you created then choose Add Job.

5. On the JOB NAME, enter the name of your customer.

6. Once done, click OK.

Follow the steps 4 to 6 to add the other customers. I also attached some screenshots for your reference.

That should do it! Please let me know if you have additional concerns. I'm always here to help you out.