Not all of the $100$ customers who walk into the C&A Retailers per day will make a purchase. About $20\%$ come to browse but not buy, $10\%$ need assistance to complete a purchase, and $5\%$ need assistance but leave without making a purchase. The other $65\%$ purchase something without requiring assistance. C&A Retailers has one greeter $($who greets every customer$),$ two assistants $($who deal with customers who need assistance$),$ and two cashiers $($who serve customers who purchase something$).$ What does the demand matrix for C&A Retailers look like?