How do you know when the glass has finished fusing?
Fusing glass is a visual process. When you load the kiln, position the glass so that you can see it when you look through the kiln's peephole. Look at the glass occasionally during firing.
When looking at hot glass, please be sure to wear firing safety glasses.
If your kiln doesn't have a peephole, then open the lid or crack the door just enough to look inside. You will see the glass go through each stage of fusing. When it has fused the way you want, use Skip Segment to start the annealing segment. If you didn't program an annealing segment, then turn off the kiln.
Checking the glass visually is more accurate than using a published firing schedule, because every kiln fires a little differently.
Once you know the correct temperature for your kiln, you can get repeatable results by programming that temperature in the future.