When you registered your PACER account, you should have checked a box indicating you are CJA counsel. If that was done, you will have an option within NextGen to toggle back and forth between exempt and non-exempt. This is done through Utilities. It defaults to non-exempt, so each time you login, if you are doing CJA work, you will need to go to Utilities and check "Change PACER Exemption Status."
Instructions are posted to the NextGen page of our website.
If you believe you may not have checked the CJA box when registering for your PACER account, you will need to contact PACER.