More information and screenshots for this process can be found in the   APDB CLASS Schedule Guide (see #7).
In most cases, adjusting the load factors should recalculate the WTUs for the course, as long as the Auto Calc checkbox is left on. If workload does not automatically recalculate, manually correct the WTUs for the section based on the load factor percentages you entered (this step is necessary for C-classification courses only; S-classification courses will be mass updated by APS).
Contact APS at x5086 if you have questions or problems related to this issue.