You want to define which users, within your organisation, use a particular signature on their company emails. In other words, you want to include (and in some cases, exclude) people from using a particular signature on their company emails.
Is this possible in Exclaimer Cloud - Signatures for Office 365?
The simple answer to this question is yes.
If you have recently moved your subscription from Signature Manager Exchange Edition to Exclaimer Cloud, you will be pleased to know that we have added the 'Sender Exceptions' functionality to Exclaimer Cloud. This will enable you to include and exclude users, groups or domains from using a particular signature.