Creating a meeting from a shared calendar

[krystle.leon]

I tried to create a meeting to include Webex and I followed these steps with no luck:

https://help.webex.com/en-US/article/nkyeiue/Allow-someone-to-schedule-Webex-Meetings-on-your-behalf-in-Microsoft-Outlook

The share calendar is greyed out and I am an owner of the calendar.  Any help to create a meeting would be helpful, thank you