Updating Multiple reports by making changes to a Master Report

Hi all,

Thank you Anonymous for creating such a topic which is totally needed from our side. 

I also would like to draw community's attention to this topic and tell our need which is similar to FoivosChrys'

We have ~600 customers out of the company. I have created well organized pbix file and published it to service. From the logic, I have a data set and a report on service. Everything is cool up to now. Next step is to create specific reports for each 600 individuals. However, I am %100 sure that my boss will tell me to erase one of the graph on a page and maybe there will be a need of additional graphs for customers due to increasing/decrasing trend. Now, my question is that will I open each 600 reports and update each of them seperately, or is there a way to do changes on a "Master" report and reflect them on every report without getting into them. 

Thanks in advance,