You can set reminders in cards to display a specific date and time. They can also be drag-dropped into checklists or checklist items. Multiple reminders can be applied within a card, but only if they are moved into individual locations, i.e. a card reminder can be set, drag-dropped to a checklist, and then a new reminder can be created and drag-dropped. A field cannot contain multiple reminders. Each reminder will send a notification to the user and also change color when it reaches the assigned date and/or time.