In addition to the one-time reboot from cnMaestro, on cnPilot E-series you can schedule a periodic reboot too if you need that for any reason:
https://community.cambiumnetworks.com/t5/cnPilot-E-Series-Enterprise-APs/How-to-automate-Reboot-Router/td-p/86781
this is a configuration item and the CLI commands for this can be pushed down from cnMaestro using device-overrides.