For all on-site users, there must be a user agreement between the user institution and Stanford University BEFORE users can visit SLAC to participate in any experiments. A single user agreement covers all experimenters from that institution. Experimenters interested in conducting proprietary research should contact User Research Administration well in advance of the anticipated need for beam time as the legal procedures and advance payment requirements may take several months to finalize. Proprietary research, which users request confidentiality of proposal, data and results for a certain period of time, follows DOE and Stanford University guidelines and is executed through a Proprietary User Agreement. Proprietary research requires advance payment at the user facility's full-cost recovery rate which is updated annually and established as a dollar rate for each shift of beam time.