There are two ways you can select a clip in ScreenFlow:
Click on the clip in the timeline:
Click, in the timeline, on the gray box of the clip you wish to
select. To select multiple clips, you can hold down the command-key
while clicking on clips.
Click on the clip in the Preview Area.
Click, in the preview area, on the clip you wish to select. To
select multiple clips, you can drag-select in the preview area: Click
on an area of the preview that has no object, and then drag the mouse
to select multiple objects.
Below the clip logo.png
is selected. The clip
gets surrounded by a box in the Preview Area and highlighted with
yellow in the timeline.