Conferencing Solution

Hi there!

I have a team of employees that work remotely, some of which are trainees.  As part of their training, I have them to listen in on some calls that I have with clients (with the client's permission, of course), then speak with them as a group after to call to cover some teaching points.

To date, I've been completing this by calling the members of my team prior to the call, asking the team to be on mute, then calling the client and conferencing everyone together.  Once the client drops off, I continue with the team.

I'm looking for a Zoom-based solution where I can achieve all of this without having to conference in by phone.  Any suggestions on how this could be achieved?  I have the basic, free, Zoom account.