Is there a way to power off/on cameras at set time

You can schedule on/off using the Shortcuts feature:

https://support.wyzecam.com/hc/en-us/articles/360019711632-Event-Videos-Notifications-and-Shortcuts

You can vote for more actions for shortcuts here:

(Be sure the click the VOTE button at the top.)

You can use IFTTT to turn on/off motion detection based on your phone’s GPS location:

https://ifttt.com/search/query/wyze