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.
Virto Workflow Scheduler setup program provides links to the various installation components for the calendar.
To access Virto Workflow Scheduler Setup program download
Virto.SharePoint.WorkflowScheduler.X.X.zip file and unzip it. Run extracted Setup.exe file. The setup wizard window will appear.
Virto Workflow Scheduler 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 process for SharePoint 2007, 2010, 2013, and 2016 versions is similar to each other.