Solution:

Site Administrators only

Note: If the host account that has scheduled the meeting is deactivated, the account will need to be activated prior to performing the steps in this article, see: https://collaborationhelp.cisco.com/article/en-us/n0ebkp

To delete a scheduled meeting for a host:

1. Log in to your Webex Site Administration page.
2. Click User Management or Users in the left panel.
3. Enter search criteria for the host that scheduled the meeting into the User name: or Email: field, then click Search.
4. Click on the name link of the host account.
5. In the Account Type: section, select Site administrator.
6. Scroll to the bottom of the page, then click Update.
7. Search for the account again, then click on the account name link.
8. Enter a new password for the account into the Password: and Confirm Password: fields.
9. Scroll to the bottom of the page, then click the Update button.
10. Log out of your account, then log in to the site using the account that was just modified.
11. Delete the scheduled meeting.
12. Log out of the account, log back into your Site Administrator account, then go to the Site Administration page.
13. Click User Management or Users in the left panel.
14. Click Edit User.
15. Enter a search criteria for the host account into the User name: or Email: field.
16. Click on the name of the host account you would like to change.
17. In the Account Type: section, select the Host radio button.
18. Scroll to the bottom of the page, then click the Update button.