Hi
Select ALL the clips you require to use the effect on and if you like Group them
Click the "Video Effects" tab from the Top Toolbar followed by the effect required from the dropdown lists. This will prompt if you want the effect on all the selected clips or just one.......i.e. In effect a "Master" effect.:-)
Note: If you use the FX button on a clip, even if you have selected multiple clips or multiple clips grouped, the effect only goes on that specific clip.
In some circumstances you might also save your set of clips as a sequence, reload it and then add an effect to the new sequence. This would work OK for things like colour temp etc. but not if you wanted the different clips treated with effects like Position and all different different .
Nat