Hover over the message you want to send a reminder for.\
Click the 3 dots in the top right.

Click on one of the reminder suggestions or "Custom..." to set a different one

Click on the down arrow for "When" to change the day

Click on the down arrow for "Time" to change the time

slack.com

This guide provides simple steps on how to set a reminder in Slack, allowing users to easily schedule and manage tasks within the platform. By following these steps, users can set reminders for themselves, ensuring important tasks and deadlines are not forgotten.