By tables, I was just referring to the acutal data tables in the RealTime database. When working with Producer, if you create an object (Menu button is a box with 12.3 in it), you can right click and get the properties dialog. Under datasource (comes up first anyway), you'll see a drop down box labeled Field/Calc: Click the drop down and scroll to find applichalfhr.num_aband. After selecting that, go to the Data Filter section to set applichalfhr.half_hr_rel = 1.
Let me know how familiar you are with Producer and creating canvases, and I'll know how specific to be. I may even be able to whip up some sample canvases to give you an idea of how the stuff works. Producer's pretty easy to work with, but you have to poke and prod to figure out what really does what.