First you need to prepare the servers by installing .NET 3.5 framework like this:
DISM /Online /Enable-Feature /FeatureName: NetFx2-ServerCore
DISM /Online /Enable-Feature /FeatureName: NetFx2-ServerCore-WOW64
DISM /Online /Enable-Feature /FeatureName: NetFx3-ServerCore
DISM /Online /Enable-Feature /FeatureName: NetFx3-ServerCore-WOW64
Then download the silent install package of VisualCron from the download page.
Last, you need to run VisualCron.msi after you have extracted the silent package.