You can move clips by "Drag & Drop".
To move clips within the same list, you can use eight the Main Window or the Floating Window. Simply select the clip and drag it up or down.
To move clips to anther list, you need to use both the Main Window and the Floating. For example, you can drag a clip from one list on the Floating Window to another list on the Main Window.
To delete clips, please right click the clip and then select "Delete" from the context menu. You can also delete multiple clips at once by selecting "Multiple Delete" or "Delete All" from the context menu of the tab.