You can group your windows on different workspaces
GNOME Documentation Project
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Organizing windows with Workspaces
Workspaces are...
For example, you could use workspaces to...
Switch between workspaces
Move windows to a different workspace
You can move a window between workspaces by pressing CtrlAltShift.
Add more workspaces
You can also remove a workspace by... All of the windows on that workspace will be XXX after you remove it.