I 'm in a part of a group for traning body. for comming to a meeting, we have to subscribe ourselves to a list. I wanna make an app that will record our name online.
I would like that each part of members could subscribe themselves to a list by entering their name. I know how to do it, but I don't know how to bring the "multiplayer" side.
for exemple, I subscribe myself to this list. How can I do for let the others members seing my name in their app.