Probably It can achieve via user poiLayer attribute. You can save kml file in user's poiLayer.
You can also just create a geofence. Not a point, but you can do a small circle.
thousand apologies for my bad english, I will try to expose the question better ... I want that from an app on an android mobile device, that a person with only one button sends its location and this is temporarily inserted in the map of my server traccar .
and that another person is viewing the map on the server and can see this point in real time.
Will it be possible?
You can have two users share same device and see its location.
if it would be a good option, but the idea is that many devices send their location and the server traccar shows it on the map.
I don't understand what the issue with that is.
Is it possible to draw a point on the map of my server traccar?
I would like to be able to do that from an app on android you can put a point of a coordinate.
If you have any suggestions I would be very grateful.