Elderly access

Hi, My housebound 94 year old MIL has been using Zoom on her ipad since Covid lockdown to keep in touch. She finds it invaluable. Recently she has experienced problems logging in to meetings due to continuous pop ups asking her to upgrade and now the addition of Calendar items filling up her home screen and reducing the size of the Join Button. Is there a way to get rid of all the clutter to just allow her to log in to a meeting without all the confusion it causes her?