Select the Edit... command to open the Launch Configuration Dialog, and allow you to edit the launch configuration for the selected target.

Edit Launch Configuration

The resulting launch configuration dialog, in this example a Java Application type.

Launch Configuration Dialog

Local debugging
Remote debugging Changing debugger launch options
Connecting to a remote VM with the Remote Java application launch configuration
Disconnecting from a VM
Launching a Java program
Preparing to debug
Resuming the execution of suspended threads
Running and debugging
Stepping through the execution of a program
Suspending threads Debug View
Debug preferences