You can open more than one copy of the Content Browser and move or copy items, including tool palettes, tool packages, and tools, by dragging them between the windows. You cannot copy tool catalogs between Content Browser windows. Only one catalog library can be open at any time.
When you drag tool catalog items between Content Browser windows, the following rules apply:
If you have the same tool catalog open in multiple windows and add an item to the catalog, right-click in the catalog and choose Refresh to update the tool catalog display in all open Content Browser windows.
Open a new instance of the Content Browser by pressing Ctrl+N in the Content Browser. You can also open a specific tool catalog, tool palette, or tool package in a new Content Browser window.
Closing one Content Browser window has no effect on other Content Browser windows. Close all open Content Browser windows at once by right-clicking in the title bar of any window and selecting Close All Windows.