Desktop Sharing with external user

Hi Eric

In terms of Licencing the only one you need is the Skype Online Plan 2 licence which comes with E1 and E3 licencing SKU out of the box. You don't need CloudPBX, PSTN Conferencing or Enterprise CAL unless you want PSTN conferencing and other traditional voice workloads

When you schedule your meetings, you will want to generate the meeting join link in outlook, or via the web scheduler https://sched.lync.com.

After you have done this, send the link out to your participants and if they do not have Skype for Business installed on their system, they can use the Skype for Business Meetings Web App which is downloadable from the join page the meeting link connects them to.

This is licence free and a 2 minute install.

Alternatively, you may want to use Skype Broadcast Meetings https://portal.broadcast.skype.com which can be used as a show and tell presentation. This allows joiners to watch and listen, and have text Q&A but no voice or video collaboration. The benefit of this is that people can watch your presentation in real time, catch up and play on demand on any device without an app. But it has those limitations explained.

thanks