e.g. Need an freelance attorney for 2-4 day project

Need a freelance attorney for 2-4 days for a mediation. I need the attorney to be present with the experts, to go to hospital administration and demand compensation for a medical error. I have great experts who have investigated this case, and are willing to also be present at the mediation. They have provided declarations before a court reporter. I just need an attorney to be present as this is taking place.