If you want to do a reminder for something, its quote straightforward, you type the following:
/remind #channelname "My reminder, hello this is a reminder" at 09:00AM every MondayOr for every weekday:
/remind #channelname "My reminder, hello this is a reminder" at 09:00AM every weekdayTo see what reminders you have on a channel, you can run:
/remind list