Use the Add-CsSlaDelegates cmdlet to add a delegate to a shared number in Shared Line Appearance (SLA). If you are using Skype for Business Server then the cmdlets are available in the Skype for Business Server Management Shell and you can find information about it here. You can find information on installing the module for Skype for Business Online here. The following cmdlet references are for Skype for Business and Microsoft Teams.
