Hello,
I can help you with the movement.
If you want to slow the movement of a camera while reproducing the sequence, go to your sequencer window click Add and select PlayRateTrack.
Once the track is opened you can add new keys to your sequence and change the rate of the track.
Otherwise you can create a Camera Rail.
Then add your camera to the rail as a component.
Add the rail to the sequencer.
Add “Current position on Rail” to the rail component.
Now you can control the movement speed between one point and another on the camera rail.
Hope this helps.