The SpecMap installation process depends on whether you are using Team Services (online) or Team Foundation Server (on-premise). SpecMap can be installed on Team Services, and Team Foundation Server 2015 or higher.
If you do not have permission to install the extension yourself, you will be informed during the installation. You can request installation of the extension from your system administrator if this is the case.
Dragging and dropping work items on the map does not work in Edge with TFS (on-premise). We recommend using a different browser.