Conventional or Trunked, you can use keyboard shortcut CTRL+A to select all, or you can highlight a range with a SHIFT click or you can highlight multiple individual objects with CTRL click, then click in any of the columns you wish to change, delay, lockout, record, AGC, and adjust all at once. Some behave a little strange. Record will toggle and Dmode won't change any if you select some that are already at their only choice. Be careful doing this with scanlists as you make them all the same and doing that will remove lists already set.