Toad Data Modeler creates duplicate objects (entity) in other workspaces

Can someone tell me where I can turn this feature off. When I add an object (entity) to a workspace, it also adds it to the other workspaces that I have. Should it not just add it to the workspace I am currently working in? If I have more than one workspace open, is that contributing to the problem? I just looked an the other workspaces that I have also have the new object.

This is frustrating, am I using the workspaces wrong? I use them to show detailed information based on components or modules of my solution, to better see and print.

Please help.

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