PowerBI how to configure access to one folder, the program connects only to the root folder

I installed the PowerBI program on my phone to view mobile reports, it goes directly to the root folder where there are all mobile reports, the root folder contains the expert reports folder, how to set up access so that during PowerBI you can go directly to the expert reports folder through the computer has access to this folder, which in the browser, when in the course of the reports, immediately enters this folder but through PowerBI it does not work, help me how to configure, tech ssrs