Workspaces by PowerToys is a flexible tool. It not only lets you select which apps you want to open together, and in what configuration and layout, but it also lets you edit your workspace later if you want to customize it further. Here's everything you need to know to edit your PowerToys workspace.
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Here's a visual guide for reference:
You can now use one of the following options to make the necessary adjustments to your workspace.
You will see the apps that are open on each screen, including those that are minimized, when you open this workspace. To remove an app, simply click the "Remove" button next to the apps you don't want in your workspace.