You can Drag and Drop links from your browser to IDM main window or download basket
Drop target is a window that accepts hyperlinks dragged from Internet Explorer, Netscape, Mozilla, AOL or Opera browsers. You can drag a link from your browser and drop it to this window in order to start your downloads with IDM.
You can also drop links to IDM main window directly.
If you want to hide this window, simply close it. Later you can pick "Tasks→Show drop target" from the main menu (or tray menu) if you want this window to appear again.