KB permission denied

I want to add nexus to my local CT, I find this page on KB https://kb.workfusion.com/pages/viewpage.action?spaceKey=WF&title=WorkFusion+Repository#WorkFusionRepository-ImportingBCBtoSPA but when i try to open link https://kb.workfusion.com/pages/viewpage.action?pageId=27724060 I have “You don’t have permission to view this page”.

How i can read topic Manage Secure Properties ?