If multiple versions of Mathematica are installed on your machine, you can select which version you would like Wolfram Workbench to use.

To verify, choose Help ► About Eclipse and identify the Wolfram Workbench logo toward the bottom of the window. The Wolfram Workbench plugin is now installed.

Restart Eclipse for the changes to take effect.

During the installation, a security warning about unsigned content may appear click “Install anyway” to continue.

In the Review Licenses window, review and accept the terms of the license agreements.

In the Install Details window, click Next.A list of Wolfram Workbench plugins is now displayed. Click OK to confirm the site information.Click Local and select the folder or add the path directly into the Location field: file:/Users/UserName/Downloads/WorkbenchUpdate/ If you have already downloaded the plugin from the Workbench product page, extracted the WorkbenchUpdate.zip file into a directory. Enter a name such as “Wolfram Workbench” into the Name field and into the Location field.Click the Add button near the top right-hand corner.Select the menu item Help ► Install New Software.To set up Wolfram Workbench, install the plugin inside Eclipse and configure it to point to your Mathematica installation: We recommend having the latest version of these installed before setting up the Wolfram Workbench plugin. Note that the Wolfram Workbench plugin is compatible with the various standard Eclipse IDEs. Wolfram Workbench requires the following software: Wolfram Workbench is a plugin for Eclipse, a popular and robust IDE. Wolfram Workbench is the recommended tool for programming in the Wolfram Language outside of the notebook interface.

Eclipse add plugin