Contacts template: "birthday" option is greyed out
Have been having trouble with Contacts on my iPhone 13 (software is up to date) and Mac (Monterey 12.6.1) in general. Today, I noticed birthdays are missing. I went to the template to see what happened, and I see the 'birthday' field greyed out, preventing me from adding it to my contact entries. Please see screen shot. Thank you!
iMac 27″, macOS 12.6