P&L is calculated at the end of the year by taking the balance of all expense and income accounts and stock differentials and then auto inserted. Only the Trial Balance and computed P&L are used during the year in a similar manner. What you want is a hierarchy of P&L accounts in the Accounts Master. You are free to change the nomenclature for the Account Classes, Account Groups and Account heads.
Since most non African FA users are not familiar with the OHADA implementation, I had to look it up and provide some links for others to evaluate and advise quickly.
Look up the FA users list and see if any are from your region willing to assist.
Alternatively, upload an excel sheet of your current OHADA accounts master and their desired classification and provide the link here to assist others to advise.
@joe: Providing a native OHADA Chart would increase the FA footprint into West and Central Africa tremendously.