You will find the list of standard contract group numbers in the Settings of PSOhub under Project Settings. They are the following: 10,20,30,40,50,60,70,80,90 and 100.
If you need additional contract groups numbers, simply click on Add number and a pop window will appear. From here you can create your additional group number(s).
One important note: do NOT overwrite the existing numbers, only create the new ones.
Once you are done, hit Save. Your new number will now appear in the list and you will also see it in the dropdown menu of contract groups.
If you need to create additional contract group numbers,