The scheduler menu allows you to schedule tasks to execute periodically. The web interface is a front end for the cru, a front-end for BusyBox's version of crontab (crond).

The reboot function lets you schedule a periodic reboot of the device.

Here, you can schedule a WAN reconnection.

Reconnect

The Custom 1 though Custom 5 fields allow you to run custom commands.

The commands called must be in the $PATH (type: type cho $PATH and which yourcommand to verify). If they are not, you must specify their full filesystem location.