Reminders can be sent by email or text message. You must set up text messaging in your Profile before you can send reminders. (See How-To: View/Update Profile.) To set up reminders for groups, from your Profile: For closed groups (eg. classes you are enrolled in, housing), click About Me sub-tab, For open/moderated groups (eg. Glee Club, Bee Team), click My Groups sub-tab. Click the Reminder icon next to the group. Set the conditions. Click Done.