How do I set session minute alerts so when someone is close to a full or half day

To set up a warning alert in the system so a user is aware that they are getting close to either a half or full day when they are logging someone out...

Please set up the following alert thresholds on the program:

When someone is checked out of a program, what this alert setting will say is if you are greater than or equal to 235 minutes, but less than 240 minutes, then an alert will display to alert the user that they are just short of a full day.

A similar result can be set for half-days.