Before you begin, you need to make sure you have access to the server and your account must have the appropriate administrative privileges to install applications.
The Virto SharePoint Related Items Field Type setup program provides links to the various installation components for the calendar.
To access Virto SharePoint Related Items Field Type Setup program download
Virto.SharePoint.20XX.RelatedItemsFiledType.zip file and unzip it. Run extracted Setup.exe file. The setup wizard window will appear.
Virto Related Items wizard performs a system check prior to the installation. All the system checks must be completed successfully in order to proceed with the installation. After the checks have completed, click “Next”.
Check “I accept the terms in the License Agreement” and click “Next”.
Select the web application(s) where you want to install the product.
Warning: You must be logged in to the SharePoint server with a Site Collection Administrator account to automatically activate this feature.
Then click “Next”.
Click “Close” to complete the installation.
Note: installation procedure is similar for SharePoint 2013 and 2016 versions.