I have created several user input buttons in order to collect information. Apart from the user input button I have also created a special cell on the (linked to those buttons) database in order to inform users about their membership. I, as thee admin, am the only one who can write on this specific cell, so there is a box that informs members about dates. Could I send notifications to users when their membership ends? Or could this box turn e.g. RED when the membership is outdated?