How do I add an extension on arcgis pro

[LauraRubio]

I downloaded the Districting for Arc GIS and don't know how to access the extension on my portal without ArcMap.

[SandeepBurra4]

Hi,

Districting is only available for ArcMap (not ArcGIS Pro). 

Refer following link: Districting for ArcGIS | A free extension for ArcMap/ArcCatalog to configure with ArcMap/ArcCatalog.

Regards,

Sandeep B