All Explorer operations can be operated via hot keys. It is therefore not necessary to have ShellDispenser actively open on your screen; instead you can hide ShellDispenser in the notification area (the part of the taskbar showing icons next to the system clock).
ShellDispenser in the notification area
You can hide ShellDispenser in the notification area by selecting "File \ Hide" from the menu. If you always want to hide ShellDispenser in the notification area, it is easier to set the options "Minimize to notification area" and/or "Close to notification area" in the "Settings" window.
You can double-click on the ShellDispenser icon in the notification area to show ShellDispenser again. Another way to show ShellDispenser is by setting an activation hot key in the "Settings" window. Pressing this key (or key combination) will bring up ShellDispenser not only from the notification area, but also from a minimized position or from behind other open programs as well.
Right-clicking the ShellDispenser icon in the notification area will bring up the hidden ShellDispenser menu. Via this menu you can also perform all Explorer operations without opening ShellDispenser at all.