Dear @Reado50.

Reado50 wrote

To be able to restrict certain wireless clients to internet during certain times, without having to add them to a seperate WLAN?

Or possibly ACL's that can be permitted/denied during certain times, that would allow a MAC rule to deny access from a client

To better assist you, may I know your application scenarios?

You can use the Portal to set the time when the WiFi is available, you can refer to the controller's User Guide to see if this meets your needs.

Best Regards！