To connect the system, go to: //Project Settings/Engine Settings/ and in the parameter Near Clip Plane set the value to 1. Also in the section //Project Settings/Maps & Mode/
Select the following settings:
To connect a new character, you need to add 3 components to it, the interface BP_Interface, copy settings FOV, Save, Load, Set Player Speed, Set All Skeletal Mesh and add it to the widget for selection W_MainMenu/New Game/Character New Game.
To replace the character model, you need to copy the sockets to the skeleton of the new character R_GunSocket and CameraSocket. After retargeting the animation or replacing it with your own.