Hello,
For that system, you should choose the Detailed Photovoltaic performance model and Single Owner financial model. Use the System Design page to design the system to meet your DC and AC nameplate power requirements. Then on the Battery Storage page, enable the battery, and size the battery for 4000 kWh of capacity at 2000 kW.
Then, still on the Battery Storage page, for the manual dispatch model, allow PV to charge the battery for Period 1 to cover most of the year (for both weekdays and weekends), and assign Period 2 to the evening hours and allow discharge for that period.
That should result in a system that charges the battery during the day, and only discharges it during the evening hours.
However, in the current version of SAM, power "clipped" by the inverter is not delivered to the battery.
Best regards,
Paul.