SBS has been designed to work as a package, which has it's good and bad sides. Still, I feel your pain and hope this'll help some:
You can remove the SBS features from Control Panel -> Add/Remove features
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In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center.
Log into Exchange Admin Center.:
Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center.
Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center.
Navigate to the Servers >> Certificates…