Adding reports to be selected from Report link

I know how to build report using report builder. But how to add the report to be one of the reports that are possible to be selected from Report link in the left side?
I added the below picture to determine where I am talking.


Hi Bilal -

In ‘Report List’ if you filter for Ref Doc ‘Sales Invoice’, your highlight of 9 reports appears.

So maybe add your report to Report List for it to show up in the list for that Ref DocType?