How to create new posting schema and connect with the some document

[Mario]

It is so simple to explain, but difficult to find the source. How create my own GL posting schema and connect with some document (Invoice, Depreciation or some document in production) ? Where is defined Incoming payment for example and these accounting entries by default:

The accounting entries generated are: DR 112000 Undeposited Funds , CR 120000 Accounts Receivable

Where I connect Incoming payment with the Recieve Payment button ?

[Mario]

Am I on the wrong forum. Ofbiz installation and look seams great, but help is poor and looks like this forum. If my english is not very well or I ask stupid questions, ok, but not even my question about number of localization project hasn't yet answered and I need that information for my work.