Once you have all the prerequisites, you can download and install the latest version of the Excel Add-in.
MSI file: Download the .msi file if you're an IT administrator or an advanced user. Use the .msi file to configure the Excel Add-in for company-wide use. See Downloads
EXE file: Download the .exe file if the Excel Add-in is for your use only. See Downloads
Complete the installation wizard to install the Excel Add-in on your device. See the procedure in Upgrade your Excel Add-in.