Move clip over time

Hello,

I can't figure out how to move a certain clip in an time interval from position a to b.

E.g.:
Clip B takes a small portion of Clip A and is stationed in the left bottom corner.
As the time passes, Clip B should move to the right bottom corner.

Is that possible?

Use keyframes to change the position in time.

pan and zoom effect from the Crop and Transform section

I don't know what to say...

You guys are really awesome. You saved my day.
I was worried it wouldn't be possible.

Big thanks!!