Nando’s restaurant. 1) identify ten systems of interest from chosen

Nando’s Restaurant. 
1) Identify ten systems of interest from chosen restaurant. Draw system map and detailed causal loop diagram for two of your systems of interest and customer flow management situation?

The subject for this question is Systems thinking and action research. 

you have to name 10 systems in Nando’s restaurant and then draw a system map and causal loop diagram for only one system of interest and also for customer flow management situation.