Choose a product from the list. If it is not there, choose “Other”. You will be asked its pack size and bag size once, and it is saved in your list for next time. Type the number of bags and the Qty fills in automatically (e.g. 1 bag of 20 kg = 20 kg, 0.2 Qtl, 0.02 Ton). Or type the Qty and the bags are worked out.

Only you see the center and rate. The customer's bill shows just the Transport amount. To add a new center, type its name and rate, then tap Save. To change a rate, tap the center, edit the rate and tap Save.