Hello AllenTexas,
Try Tools>Change working time. Make sure you have the project calendar
selected, scroll to the month, select the date and click the Nonworking
time option button on the right. Click OK. Assuming your resources'
base calendars are the project calendars the tasks should move as you
wish.
I hope this helps. Let us know how you get along.
Julie
Project MVP
Visit
http://project.mvps.org/ for the FAQs and additional information
about Microsoft Project