To Enable Custom Project IDs:
- Top right, click your name and select Settings (see below if you do not see the Settings option)
- Click on the System tab.
- Click the Edit button.
- Put a check next to Allow Custom Project IDs.
- Click the Save button.
Now when you create or edit a project you will see a field to enter the project ID.
Note: If you do not have administrative privileges you will not be able to get to the Settings, ask your administrator to change this option for you.