Allow for the user to select all source columns instead of selecting one by one and conversely, allow the user to deselect all columns with the same checkbox much like typical checkbox functionality.
What is the use case?
This could improve the experience for wide tables. When dealing with wide tables, I would ensure that all columns aren’t selected at all, then search for the columns that I want selected. Currently, it’s a pain to hone in on the several fields you want without spending a ton of time getting there.
How often would this feature be used?
At least once an hour per person.
What is the impact of this feature on your organization?