How to disable overwriting in Premiere Pro cc? whenever I drag a clip across the timeline and place it on top of another, the entire thing or a portion of it gets deleted, how do I disable this feature?

(I know the general work around to do this is not to do it but I would like the security that if I missed that I accidentally dragged another clip on top of another and then deleting a little bit that it won't happen)
There is couple solutions:


Use Alt+ Drag
Use Track Select Tool to move everything before and after dragging
Use Insert button (,) button from Source monitor


Good luck!