Sheet 1 – thousands of registrations over many years and is considered a big archive and cannot be edited.
Sheet 2 – a live sheet with registrations that is changing often, few entries and cannot be edited.
Sheet 3 – my sheet that I want the following data to feed to.
Sheet 1 has loads of archived entries. I would like to create a formula in sheet 3 that looks at sheet 1 and sheet 2 registrations and ticks a box in sheet 3 if any of the registrations match, additionally I want the formula to look at an “end date” column in sheet 1 and only look at the registrations in sheet 1 compared with sheet 2 that fall within 14 days of today based on the "end date" in sheet 1.
I have been using INDEX / MATCH functions to little success
Thank you