Hello - I am attempting to change the existing list of "Lead Source" options in Marketing Automation. I can find where to edit the default fields and change them to alphabetical order, add the merge tag, etc, but I cannot find any place where I can edit the list items.

The current list is far too long for our purposes and does not include some of the most common sources we will need. For example - the list includes G2Crown but doesn't have a Tradeshow option.

Please advise.