After the add-in downloading, open the zip package and double-click on the setup.exe. If some component for run is missing (e.g. library), program automatically downloads it over the internet and installs. After successful installation, you can use the add-in. If you start the Excel, you will see new ribbon toolbar tab, named GIS. On this tab, you will find functions for work with maps and spatial data.
If the installation fails, contact me with your problem. If your system blocks the installation, copy the installation package to a directory with “full access rights” such as the Desktop or My Documents and try the installation again.
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Add-in uninstalling is also very easy. Open the Control Panel – Programs – Programs and Features – Uninstall Program. In the application list, double-click on GIS.XL and add-in will be uninstalled from your computer automatically.
Add-in installation is also in the following video.
In the case of installation fail, try also the steps described here.