Customize Access Control List

I run my private clinic together with my recipient. He should be able to accept payments but in OpenEMR I could not see any option for a recipient to do this. Furthermore, he ideally should be able to enter growth indices related to children such body weight and height. Again, there is no option for a recipient to do that. Is there any option to customize that role e.g. in the access control list panel?

OpenEMR v5.0.2 (1)

Windows Pro 10 64 bit