H
"i When I wanna use the same clip again in the same video, I have to remove the effect or transition first. Its verry annyoing and time eating. "
As Borate notes, you can only addTRANSITIONS to clips placed on the timeline. You cannot apply them to clips in the clip bin.
However, you are adding (it seems) an effect to the clip when it is still in the clip bin which is not the best way to proceed.
You can apply an EFFECT to a clip in the video clip bin .....but if you do this it will remain a property of the clip. (Try adding a CROP effect to a clip in the bin and you will see what I mean.) If you do this and you use that clip again further along the timeline you will also automatically add the effect as well. This is NOT the case with transitions since (as we have stated) these cannot be added to a clip in the clip bin and consequently will not migrate if the clip is reused.
In general therefore it's probably best to always add a desired effect to the clip after you place it on the timeline.
It should make little difference whether you work in storyboard mode or timeline mode
Nat