Ticket Sales by Day of Week & Channel

Hi Folks, 

I'm trying to figure out how to report out in analytics the ticket sales by day of week - we're looking to see when it is most useful to have our staff on-site/available for phone calls in between shows and this data would help.

So far I've been able to add 
"Day of Week Sort" & "Channel" to the rows but I'm getting stuck when I try to select the # of tickets sold on that day. I am not sure where to pull that data from. 

Thanks in advance!