Hi, thanks for posting.

You can probably achieve this using the 'Capabilities' feature. It's originally intended for distributed processing, but I guess it could be used to stop your local machine from building projects too.

Under the projects that you want to 'switch off', add a 'Required Capability' (project-level configuration setting). Because your engine modes and existing config won't have this capability present, the engine won't build the projects.

You'll probably want to set up an engine mode that has the 'Capabilities of this computer' setting assigned with the capability so that you still have the chance to build these projects under NCrunch. In this way, you can use the engine mode as the switch controlling whether or not the projects are built.