/remind <time> <todo>
This command will remind you to do
/done <id>Remove a reminder.
idis found using /tasks.
Print a list of the tasks, their ids, and their frequency, into the information buffer.
/remind 600 Work!
Will remind you to work every 10 minutes.
Defining the time in seconds is not really practical, so you can describe it with days, hours, and minutes, in a time-string, e.g:
/remind 1h23m "Get up"
Will remind you to get up every 1 hour 23 minutes.