One click share location in Google Maps to specific user or other app?

I know there's a share location feature in Google Maps and various android apps for sharing locations. But is there a widget / shortcut or something where you can click on it and instantly share your location with a pre-defined contact whether by SMS, email, etc. ? I have a relative that I need to pick up quite frequently but sometimes they're in one street and sometimes they're walking in another. They're a little older and aren't too tech savvy except for the basics (viewing photos, chatting, etc.). Basically I want to set up a widget / shortcut on their homescreen and if I can't find them, I can call them and tell them to click on the button to share me your location so I can find them. Google Messenger has a share location by SMS feature too but that's too many clicks, want to simplify as much as possible. Other apps like Life 360 or Family Locator are on 24/7 and kill the battery. Don't need 24/7 location sharing.