An agreement between the parties or their attorneys relating to any matter in an action, other than one made between counsel in open court, is not binding unless it is in a writing subscribed by the party or the party's attorney or reduced to the form of an order and entered, pursuant to CPLR 2104. A stipulation of settlement signed by an attorney may bind the client even if it exceeds the attorney's actual authority if the attorney had apparent authority to act on the client's behalf.
Anghel v. Utica Mut. Ins. Co., NY Slip Op 06073 (2d Dep't September 19, 2018)
Here is the decision.