Subrogation typically involves:

• Notifying the responsible party. The responsible party may be an individual, or a company. For auto accidents, subrogation claims are usually submitted to the other party's insurance company. 
• Providing documentation of the damages, costs, and facts from the investigation of the loss. 
• Collection of the amount owed. If initial efforts to collect monies owed are unsuccessful, collection could include use of collection agencies or filing a lawsuit. 

Completion of the subrogation work may take some time, depending on the willingness and/or ability of the responsible party to pay.