There is no rule that requires you to disclose that you have received help from a limited scope services lawyer. However, unbundling is becoming very common and, in some situations, it may assist the court to know that you have received assistance.
For several kinds of court attendances, it may be helpful for you to arrange to have telephone access to the lawyer while you are in court. For example, you may want to receive updated legal advice from the lawyer about settlement options that are being proposed.