Need user to access report made from report builder stored in "Accounts module"

I have a user in my company who is an Item Manager and Stock User. I have created a customized report using the Report Builder tool with Sales Invoices as a base. This report is now available in the Custom Reports section in the Accounts module.

I am the administrator for our ERPnext desk and hence I can view any and all reports. For this user, I would like him to access the report I have created without giving him access to any other doctypes or modules than he already has. How should I go about it?

I have read the User and Role Permissions documentation but it’s very confusing to understand.