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
If you want just a one off one:
/remind #channelname “Just once please!” at 09:00 Sunday 26th July 2026
Which will send a single reminder at that time and date, and then remove itself, never to be seen again.