How to Setup ASUS Router as Access Point mode?

asus wapAccess drivers, manuals, firmware, software, and FAQs by selecting product series and model for quick access to your ASUS products.I am in a small apartment, so the Asus RT-AC86U has worked well in the past. Is there a way to use it just as a WAP for pfsense? It has Asus's AiMesh agility and is currently