We have a KPI for users that the user at least logins to system 4 days a week(7days). not 4 times; use this to track if the user update/create data in time. so the ideal report looks like the following;
user_name, week1, week2, week3, week4.
aaaa, 5days, 4 days, 3days, 1 days;
bbbb, 2days, 4days, 3days, 2days;
we will run this report at the end of month ir the early next month to see the last month logins;