simples..... assuming you would like to add a video effect to a bunch of clips ....
1/ in the video channel ABOVE the channel you want to add an effect, click and hold your left mouse button
2/ still holding the button draw down and a box will start to form
3/ drag the box across all clips you want to add the effect too
4/ from video effects select your effect and drag it onto your highlighted video clips
and thats it ....takes 3 seconds
'No longer are the pleasures of Home Movie Making limited to those with ample funds. Now the man and woman of moderate means can join the sport'..... Kodak catalogue 1933