Apple’s Find My Friends is a useful app for sharing your location with close friends and family members, but it can also be used for temporarily sharing your location with groups of people that you may not want tracking for on a normal basis, such as when travelling with friends or coordinating a meetup somewhere.
To share your location temporarily, simply download and install the Find My Friends app, sign in with your Apple ID and password and then choose the “Temporary” button from the bottom menu bar. From here you can add the addresses of your temporary sharing group and specify when you want location sharing with this group to end. You can even setup more than one temporary location sharing group, and as an added bonus, Find My Friends provides quick links for sending an iMessage to the entire group. When an event expires, it will simply disappear from the list, along with any users who were added as part of that group.