The Get-Help cmdlet is a Microsoft cmdlet that works for Veeam.Archiver.PowerShell, Veeam.Exchange.Powershell, Veeam.SharePoint.Powershell and Veeam.Teams.PowerShell modules as well.
To get full details about the necessary cmdlet, run the Get-Help <cmdletname> -full command from your PowerShell console. The Get-Help command will return a whole set of parameters that are available for the cmdlet and an input type for each parameter.
The online help for PowerShell on Veeam Help Center always provides more accurate information than the help reference that is integrated into the product. The online help is updated regularly and contains all fixes based on customers feedback.