Do you track your cost of Goods Sold or labor cost? If not, you should.
Labor costs are easy to track, just put the employees into SP-1 and then add their wage and overtime wage. You can even add a a daily salary amount for those employees that you don't pay hourly. SP-1 will then calculate an on the fly labor percent for you.
Cost of Goods is a little more difficult. In order to track this, you need to enter the inventory items and then link them to the menu items. That way SP-1 knows your portions and weights. From there it is just a matter of receiving inventory and performing physical counts. This will give you an on the fly COG's number.
Give it a try... I'm sure you will see that you have better control over your location.