Before you begin, you need to make sure you have access to the server and your account has the appropriate administrative privileges to install applications.
Virto SharePoint Forms for SharePoint 2013 setup program provides links to the various installation components for SharePoint Forms for SharePoint 2013.
To access SharePoint Forms for SharePoint 2013 Setup program download
Virto.SharePoint.FormsDesigner.X.X.zip file and unzip it. Open folder and run extracted Setup.exe file. The setup wizard window will appear.
SharePoint Forms Designer setup 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”.
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”.