I'm trying to have figure out how to calculate and elapsed time field, in minutes, how long it's been since a record was created.

Here's the scenario: This app will be used to check individuals in to our lobby, and track the number of visitors our receptionists are working with on a daily basis. I'd like to calculation to be from the number of minutes since they arrived, to right now, this minute.

I'm thinking something like this, but it's not working in a Forumla-numeric field:

ToMinutes(ToTimeOfDay()-[Arrival Time])

Help?

Here's the scenario: This app will be used to check individuals in to our lobby, and track the number of visitors our receptionists are working with on a daily basis. I'd like to calculation to be from the number of minutes since they arrived, to right now, this minute.

I'm thinking something like this, but it's not working in a Forumla-numeric field:

ToMinutes(ToTimeOfDay()-[Arrival Time])

Help?