PX Retention Reports: Option to select a rolling period of last X days or weeks

The ability to create a retention report with a date which is always the last x days or weeks (similar to other adoption reports available.

The reality is that when I am looking at my dashboards to understand product usage, all of my reports are looking at the last X days or weeks. This is with exception of the retention reports where they have to be manually changed each time I go to the dashboard. It makes sense to add the option for last X days or weeks to these reports too. 

It’s an issue especially in my case as we have some permission restrictions where a admin created the reports and dashboards and now I can’t permanently update the reports. Instead I have to either ask the admin, or duplicate and replace the reports on the dashboards to save the new dates. This makes the user experience less enjoyable and takes longer to get what I need from the product.