Edit: Nevermind - what you’re requesting is possible via roll-up fields.
Clients
Names (single line text)
Aaron Schiff
Appointments (linked records)
11/14/00,11/13/00,11/14/01,11/12/02
Last Appointment (roll-up)
11/12/02
Settings: Sort by 'max' on date field in Appointments
Time Since Last Appointment (formula)
6272
DATETIME_DIFF( TODAY(), {Date}, 'days' )
Appointments
Date (date field)
11/14/00
11/13/00
11/14/01
11/12/02
Edit: Nevermind - what you’re requesting is possible via roll-up fields.
Clients
Names (single line text)
Aaron Schiff
Appointments (linked records)
11/14/00,11/13/00,11/14/01,11/12/02
Last Appointment (roll-up)
11/12/02
Settings: Sort by 'max' on date field in Appointments
Time Since Last Appointment (formula)
6272
DATETIME_DIFF( TODAY(), {Date}, 'days' )
Appointments
Date (date field)
11/14/00
11/13/00
11/14/01
11/12/02
Awesome, works great, thanks!