Memory aides maybe used to prompt the person to carry out activities like attend to an appointment on time. Many of these memory aids are common and readily available. The difference between a person with a cognitive disability versus someone functioning in level 6 or higher is that without these aides, they have a higher chance than normal of forgetting these appointments. Some memory aides are wall calendars, diaries, and electronic apps on the person's smart phone.
Other memory aides commonly used are shopping apps and to do check lists. These maybe in paper format or electronic. Let the person choose what they like to use best.