How can i set the priority for sources in microgrid optimization problem _Microgrid Energy Management System (EMS) using Optimization

Hi

in the below example, https://www.mathworks.com/matlabcentral/fileexchange/73139-microgrid-energy-management-system-ems-using-optimization?s_tid=srchtitle

how can i set priority of using the grid , PV and battery sources as per the load requirement?

is it posible to do so in terms of constraints ?

Please advice