Non-Local users cannot be given rights on this server(unable to add online user to onpremuser)

I came across below article 

https://docs.microsoft.com/en-us/exchange/hybrid-deployment/set-up-delegated-mailbox-permissions

Please correct me with the steps

step1: What is the command to check ACLableSyncedObjectedEnabled is enabled or not, will below command give me output

get-organizationConfig -ACLableSyncedObjectEnabled

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step2: Set-OrganizationConfig -ACLableSyncedObjectEnabled $True
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Step3: which of the below syntax is right

Get-AdUser myexchangeonlineuser@mydomain.com | Set-AdObject -Replace @{msExchRecipientDisplayType=-1073741818}

or
Get-AdUser myonpremisesuser@mydomain.com | Set-AdObject -Replace @{msExchRecipientDisplayType=-1073741818}