Workforce Engagement Management

Good morning,

I have an agent who engage in a conference between themselves, a customer, and help desk.  The help desk employee could not help, and the agent wanted to reach out to another technical support without the customer being engaged.  Is there any way to do a consult once a conference has been started?  I was advised that once a conference starts, even after someone drops off, there is no way for the agent to open up a separate consult.   If a consult cannot be opened can the agent add the new party to the conference but mute the conversation to the customer.  Reading it appeared placing the customer on hold would not necessarily do this, but I may have misunderstood the documentation.