I cannot see how to select multiple lines.  I have a few editable field but only one field at a time is highlighted yellow even though click ctrl or shift and select. 

Never mind the last comment.  I figured out how to multi select

For reference, since it’s not obvious at all, to do multiselect you have to:

• Think which row A you want to be the start of the selection.
• In that row, left click on one of its fields that lie within an editable column (one whose header has a pencil icon). The field will become a textbox with a cursor, but that’s not relevant.
• Think which row B you want to be the end of the selection.
• Press SHIFT and without releasing, in that row, left click on its field in the same column as mentioned above.
• The visible result should be a thin dashed rectangle stretching from row A to row B, only in the clicked column.

At this point the row range is selected and on clicking “Delete Record” in the dropdown appearing when hovering somewhere in the “NEW” column, NetSuite will display a confirmation dialog and on confirming – will really delete the entire range.

Phew… Not obvious at all…

I’ve been using NetSuite for 20 years and I never new multi-select for deletes was available. I feel like an idiot, but thank you for the post!