You do not need an attorney to file completed documents in a court if you are able to prepare the documents yourself. This applies in any court. You are allowed to represent yourself in any civil case in any court in the United States of America. Therefore, you may represent yourself in this court also.
If you feel uncomfortable representing yourself, the clerks of this or any other court cannot represent you by giving you legal advice. The clerks of this court cannot tell you which document you should file. The clerks of this court cannot complete any document for you or tell you what to write in any document. That would be giving you legal advice, and the clerk would be violating the law.
When you file a petition in this court, you are beginning a case in this court, and you will be representing yourself in that case unless you engage an attorney to represent you.