If you want to create a precise bid right down to the penny then use detail pricing. If you want to create a faster bid, then use per square pricing. Both methods allow you to create a bid by typing in your measurements and totaling your quantities.

 From the main screen click your selection here. The selection here determines your pricing method. 
Selecting detail pricing and clicking the felt check mark button opens your detail pricing  screen. 
Selecting Per Square Pricing will allow you to open your work order screen. Your bid calculations should be entered first to allow copying your quantities and prices to be selected from your price list for detail pricing. If in Per Square pricing mode then your quantities will be added to your work order.

Per Square Pricing

Choose this selection if you want your roofing bid price calculated by a price per square.
You can enter your price per square three different ways:
1. By typing in the price directly into the Job Cost Grid.
2. By clicking the PerSq Icon in the Job Cost grid. This will open your floating price per square. You can then
click any bottom icons to enter your price per square. Clicking two buttons will also enter your optional price per   square. More on this floating price per square:

Clicking this icon   allows you to create and print a work order by selecting items from your price list.
Note:
  Rounding Total Squares only applies to this pricing method.

Choose this selection if you want your bid price calculated by entering all your individual material items, Labor and other items.

Clicking this  icon     opens your Detail Pricing window, and changes the Job Cost and displays the Detail Pricing Totals Grid.

The Price Per Square prices and screens do not apply to detail pricing.
Many of the options in Options only applies to Detail Pricing.