With this new upgrade we have made it easier to add many options to a custom field. Previously the requirement was to add each custom field option row by row.
You can use comma separate values in a single row or enter values in separate rows to define your select drop downs. You can even paste a list of details from your spreadsheet to populate against your select drop down, making adding many drop down options more efficient.
Control Panel > Contact custom fields > Add > Select / Multi select
(Single value per row)
(Comma separated values in a single row)
How it would appear in the system.
Please let us know your view and comments. We use your feedback to improve our products.