Need additional Years Added to Calendar Linked Spreadsheet

First off, I would like to say thank you to Pete_UK! I came across your calendar spreadsheet a few years ago (ef66_calendar_multi_lookup.xls‎) and it has been extremely useful to me for work purposes.

We are coming up on the last year that the calendar supports in the document and I was wondering how to add more years(Calendar tab, Cell K4)?

Thank you in advance!

Marc Z.

Click the cell. Go to Data --> Validation --> In the Source box add: ,2016 to the end of it.