# How to enable ArcGIS Extension tools For ArcMap, see . For ArcGIS Pro, users need to know which license type they are using when checking to see if they have an extension license. ArcGIS Pro has three types of licenses: 1. Name user license – individual users login to their ArcGIS Online account with Harvard Key to get licenses when they run ArcGIS Pro. This is the recommended way for anyone with a Harvard Key. 2. Concurrent use license – the user login to Harvard VPN first, and then set the concurrent license server to license.cga.harvard.edu. 3. Single use license – the user fills out a webform to request a license code, apply that to authorize licenses before they can use the software. Users need to first pick the right type of license from ArcGIS Pro, before providing the other information to get licenses respectively. For the vast majority of users, the core license and all extension licenses are already bundled together in any of the three license options, so they will get all at once. However, they still need to “enable” the extensions in the software package (even though they already have the extension licenses), before they can use the extension tools. In the below screenshot, if the box is greyed out and unchecked, that means they didn’t have the license; but if the box is not greyed out, yet not checked, that means they have the license, but didn’t enable the extension. The result is the same – they can’t use the tools from the extension. ![screenshot.png](/sites/g/files/omnuum9996/files/styles/hwp_1_1__720x720_scale/public/gis/files/screenshot.png?itok=xHE-5DN4) See for more information.