[CoursePress Pro] Filter students in reports

Hello I have now three generations in any course, and if very hard to see the report of task because for any course appears all the students and isn't appear by date create or a way to filter the students for generation, I use wishlistmember too and with wishlistmember I have all the students by generation, so I can have an array with the students Ids for generations, How can i add an additional dropdown to filter in reports the students for generation.