Delete key
The Delete key is used to delete something in your show.
E.g. you want to delete group 2:
Delete Group 2 Please
If you delete a cue in the middle of the cue list, you are presented with a window that allows you to choose how the rest of the cues should be affected. The option are Normal delete or Delete cue only. The normal delete might change how the next cue looks. Delete cue only will not affect the following cues.
E.g. in your main cue list, you don't need cue number 3 anymore, but you need cue number 4 to stay the same:
Delete Cue 3 Please and now select Delete cue only.
IF you need to delete a cue in one of the other cue lists, then you need to specify which one.
E.g. you want to delete cue 5 in the cue list on executor 3 and the changes should track into cue 6:
Delete Cue 5 and now press one of the keys associated with executor 3. This will give you the window with the options of Normal Delete or Delete cue only. Tap Normal Delete.
If you want a better understanding of tracking and how the values are affected through the cues, you can reed about tracking here or by following the link at the end of this page.
Advanced Functionality
Pressing the 
key together with the Delete key give you access to the Remove command.
This is used if you need to removed stored values from a cue.
E.g. you want to remove the fixture 4 dimmer values from cue number 2.
Fixture 4 Please - This selects fixture number 4. So what we do from here is only affecting this fixture.
+Delete (gives the Remove command) now press Dimmer in the Preset Type bar on the right side of screen 1 - This gives the dimmer the special Remove value in the dimmer (see Fixture View in Sheet mode)
Store Cue 2 Please - This removes the dimmer values from cue number 2. Leaving the values from a previous cue tracking through cue 2.