How to Transition My Staffing Agency into a Travel Staffing Agency

I currently operate a staffing agency focused on providing therapists for school districts and higher educational institutions in California. I’m interested in expanding my business to become a travel staffing agency, allowing me to recruit candidates from other states. I’ve done some online research, but I think I might not be using the right search terms, as I haven’t found the information I need. Any guidance on how to make this transition would be greatly appreciated!