Upon becoming incapacitated, players will see something similar the above in their HUD. This is to let them know the options they have at this point if there are no players nearby to assist at the time and they are not in a party.
While this is all well and good, at the moment the prompt to activate the Rescue Beacon is not correct for players using certain keyboard layouts and thus pressing the "M" key will not launch the beacon to request aid.
For players using AZERTY Keyboards, the Rescue Beacon hot key is the "," key (the comma key). This is the common keyboard layout for French.
Our teams are looking into clarifying any keybind/UI conflicts for this function, which will be implemented in a future patch.