Calculating Customer Cohort Retention Rate and more

I tried to do tracing for the customer’s names by clicking on the cohorts in any different periods (who ordered x number of times but not return back) or the one who still continue ordering till the end of a cohort, there is no any customer filtering based on my click:

You did something impressive before in defining (New and lost customers) when you click on any cohorts it gives detail on the state of the customers

I’m doing a project using the same concept in Enterprise DNA, I get to benefit from your cohort but my client needs the names of those customers who ordered and didn’t return, he (the client) need it to contact his customers to know why they didn’t come back, please advise.

I have another Question, Sam, How do we calculate the churn rate at the end of each cohort by creating a new column at the rightmost position of the (Cohort Analysis) report table?

Thank you