A Firm admin is a role in the eFiling software that has the ability to add new users, add new attorneys, and manage the payment accounts.
The creator of the Firm account is the Firm Admin by default. If you are unsure who your firm admin is, ask your co-workers who has the ability to add new users, add attorneys or add a payment account in the eFiling software.
You can also contact technical support for further assistance. You will be asked for an email of a particular user in the account OR a firm email domain(ex. @tylertech.com).