True, there was some ambiguity to the question.
Hotspot might be easiest. If you want to only have selected devices use the hotspot you can add their MAC in the access list and force them onto a VLAN+bridge that runs the hotspot without needing to use a new SSID. Otherwise, just make a new SSID with the hotspot on it. Even then I don’t know if on hotspot you can lock a device out when it’s used up it’s allocation for a 24H period. It might need some extra scripting to support this.