When working with SoapUI, all visible projects are part of the current workspace. You can add as many projects as you want to a workspace, but can also easily switch between different workspaces allowing you to have different testing setups (for different systems, clients, etc).
To create a new workspace, select the “New Workspace” option from the File menu this will prompt for a name and file for the workspace and then open it:
Now you can add new or existing projects to this workspace via the global File menu or the Workspace nodes’ right button menu.
Switching between workspace is equally easy; select the Switch Workspace option from the File menu and specify the workspace file you want to switch to, or just use the Recent->Workspaces option from the File menu:
Selecting the previously used “My Workspace” workspace automatically closes the current workspace (prompting to save any open projects on the way) and opens the new one: