Import Files to the Timeline Tracks

There are two ways to import files into a timeline track.

Method 1

Select a track. Then hover mouse cursor over a media file you want to add to the track. Two buttons will show. Click the "+" button. The file will be added to the selected track.

Method 2

Click the left mouse button to select a media file, drag the file to a track that is right to you, and release the mouse button to drag the file on the track. The file is added successfully.