Step 1: Trusting your iPad
This step only needs to be done the FIRST time you connect your iPad to your computer.
Plug your iPad into your Mac with a USB->Lightning cable. This is the same cable that you charge your iPad with.
Once connected, open up a new finder window, and click on the iPad in the side bar.
Click on 'Trust'.
On your iPad, click 'Trust'.
Your Mac can now see your iPad.
Click on the iPad on the left, and select 'Trust'
Tap on 'Trust' on your iPad
Step 2: Share your iPad in Webex
After you have trusted your iPad, things should be smooth sailing! During a Webex call, select share content. When you scroll down, you'll see the option to share your iPad.
Select it, and you're now broadcasting your iPad screen to the meeting!