‘Report Center’ is a page in your SharePoint application that shows the reports that were configured in the Report Manager app.
Configuring Report Center
Click ‘Page’ on top left corner of a page on which you wanted to configure Report Center and select ‘Edit page’ as shown below
Web part Page:
Wiki Page:
Add ‘CCS Quick Launch Hider’ on the page to hide quick launch on the page
Then you can see Report Center with all the configured Reports (in the Report Manager, each report has an option to show or not show in the Report Center -- the Report Center will only show the reports that are set to "show").