If your friend cannot afford to hire an attorney to represent him in court, he still has a few options. He can hire an attorney just to do the paperwork for him and then go to court to represent himself. This costs far less than having the lawyer in court. Secondly, he can prepare the papers himself and go to court for himself. If he does not know how to do the paperwork, he should check with the court clerk's office in the county of the state where the case will be heard.
Many states have forms for people to follow in order to prepare their papers properly for court.
Hopefully, your friend can afford the services of a lawyer to help with the papers and to advise him on what to include in the papers. An experienced lawyer's input in these situations is very valuable. The lawyer can explain the procedure and suggest strategies. When one parent withholds visitation or interferes with the other parent's relationship with the child, it is very difficult to get good enforcement. Often, a lawyer will have to appear in court several times to get anything done.