Allow Data Validation to create multiple columns with the same drop-down list & Date Headers

WenFry03

When building sheets, sometimes we need multiple columns of the same drop-down data. It would be great to not only be able to create a reference to that list of data, but also to be able to drag or copy to other columns.

Dates as headers are also annoying - I'd love to use datas as column headers and be able to drag the dates along with a formula to get an entire year. - Everything has to be entered separately.

Importing Excel docs also won't hold the date header