Клиент и сервер можно собрать вместе.
"c:\Epic Games\UE Binary\UE_4.26\Engine\Build\BatchFiles\RunUAT.bat" BuildCookRun ^
-project="c:\_Projects\_Jenkins\TPS\TPS.uproject" ^
-platform=Win64 ^
-clientconfig=Development ^
-serverconfig=Development ^
-archivedirectory="c:\_Projects\_Jenkins\TPS\Build" ^
-stagingdirectory="c:\_Projects\_Jenkins\TPS\Stage" ^
-build -cook -stage -archive -pak -package -allmaps -client -server