The Workbench can work with more than one installation of the Wolfram Engine. This can be useful if you upgrade the Wolfram Engine and want to spend time working with both the old and the new version.
The Workbench preferences gives access to a page for managing Wolfram Engine installations. The preferences let you set the default installation used when the Wolfram Engine is accessed. However, there are a number of places that let you set a different Wolfram Engine installation from the default. This includes a setting for a project and also for a particular run configuration.
The Workbench lets you add and remove any number of
Wolfram Engine installations.
The following shows the editor for setting the details of a particular
installation.
Here you can give the Wolfram Engine installation a name and fill in its location. You can also give separate locations for the Wolfram Engine front end and kernel.