2 ways you can do:
1) private settlement: provide a written quote and ask the one who hits you pay in advance at the shop which provided the quote. Once paid, then schedule appointment to fix.
2) insurance settlement: provide other driver's insurance and licence to your own insurance company. An appraiser will evaluate the damage and assess liability(whether you are at fault, and also amount of deductible). Then you will bring your car to your preferred shop and repair based on the estimate done by the appraiser.
----
1) We can provide you a formal quote and you can give it to the other party and give them a time limit to response.
2) Once you contacted insurance, say you left car in our shop first, then you drop your car in our parking lot and appraiser will come. A loaner car will be provided at no charge.