Explanation
Auto-Mark is always enabled on the Element and Element 2 console and ETC Puck / ETCnomad running in Element Mode. This is different than other Eos-Family consoles, where Auto-Mark can be enabled and disabled in Setup > System > Cue Settings.
You can disable AutoMark on a cue-by-cue basis on the Element. Select the cue where the Marking lights turn on, then type [cue] [x] {automark off}.