When working with nRF Connect SDK v2.4.0 or newer, a new Use sysbuild checkbox now shows up at the bottom of the Add Build Configuration screen. The default state of this checkbox is determined by the sysbuild configuration option for west. Enabling it will make the extension pass --sysbuild to west build, making the top build directory a sysbuild directory, with the application as a child image. Any sysbuild-specific CMake or configuration files will be picked up by default.
