Issue with airtable data sync – last modified time not showing up

Hello Hubspot community.

I’m attempting to set up a data sync between HubSpot and Airtable, and am running into an issue during the set-up. I’ve successfully been able to choose my airtable base, table, and company name, but the “Last Modified Time” remains greyed out and I am unable to advance.

Any tips on how to proceed? Screen grab attached.

I was able to sort this one out myself. I had thought I created the “last modified” fields in airtable, but I supose I didn’t… Was able to select once those were in place.