Critical Ratio or Due Date

Select Critical Ratio to set each job's priority based on the amount of work yet to be done on the job in relationship to the number of days until the job is due.

Select Due Date to set each job's priority to the number of days until the job is due + 1000. A job due 3 days from now would therefore have a higher priority (1003) than one due 6 days from now (1006).

The differences between the two options are described in About Global Priority Settings: Due Date vs. Critical Ratio.