Resize or delete array

I created an array of SolderWire-0.1sqmm to simulate a protoboard (perboard, veroboard). I placed a single footprint at 1x01 of the SolderWire and then created an array of 100x30. I then selected the whole array and locked it. Then I started placing parts until I got the layout I wanted. The array is far too large. I would like to shrink it or, if necessary, delete it. However, all I’m able to do is select, unlock, then delete the array members one at a time.

So how can I:

  1. Unlock the entire array or
  2. Highlight, unlock, delete part of the array or
  3. Resize the array or
  4. Delete the entire array

I spent a lot of time googling this but found nothing. Perhaps my search terms were bad.