"To negotiate a resolution" means to discuss and find a solution or agreement to a problem or conflict through communication and compromise. Full definition
Successfully negotiating resolution of contested trust and estate matters — involving millions of dollars — prior to trial. (gtg.legal)
The plaintiff indicated she wished to use the collaborative process in negotiating resolutions to the various outstanding property and support issues. (practicepro.ca)
Other law firms could, theoretically, use the knowledge that you charge flat fees against your clients when negotiating a resolution to a case. (raleigh-divorce-lawyers.com)