The icons on your desktop can be moved by left clicking, holding and dragging the desktop icon to the position you want it. Shortcuts or desktop entry files can be opened by double click on the icon. If you want to view or edit a desktop file say for launching an application is to right click on the icon open with and select say a text editor like featherpad to open file. If you move a desktop icon and then want to move it back right click and uncheck :menuselection:`Stick to current Position`.
To edit a desktop entry including those on your menu you will need to open the .desktop entry in featherpad or the text editor of your choice you can also on desktop icons right click on the icon and :menuselection:`Open With`. To launch a program with an option simply add that option to the line that starts with Exec=. To change what the name of the desktop file shows up as on the desktop entry line that starts with Name=. To change the icon to that used by something else change the line starting with Icon=.