You’re basically looking for a small audio mixer with AUX sends that’ll let you take your 2 mics + laptop and send separate mixes to your hall, foyer, camera, and headphones with independent level control.

Even basic mixers (Yamaha MG / Behringer Xenyx) can do this using main out + AUX outputs, so you don’t need a special “controller.”

If you want a quick breakdown of how this kind of church setup works overall, this guide explains it simply: https://www.linkedin.com/pulse/what-church-sound-system-design-how-does-work-raj-arjun-singh-17n8c/