More Simple Cashier module and simple fee sheet

Hi, I’m new in OpenEMR, but implement Openemr 5.0.1 wuth custom features, try toHi, I’m new in OpenEMR, but implemented Openemr 5.0.1 wuth custom features, try to make a simple cashier module for registering the dayly movement,an another simple module for prepare bill, like a manual process…

The problem has that I don’t understend completly the fee sheet precess and code .

I readed the documentation and try to understood the php code, buet I lost my self. make a simple cashier module for registering de dayli movement,an another simple module for prepare bill, like a manual process…

Te question is that I don’t understend te fee sheet proppers and code completly.