How do I revoke Web Push permissions for a specific site?

I read the Instructions and copied them as Exhibit 1 of this e-mail.

I clicked the Menu button. Then a drop down menu appeared as below:

UNDO
Redo
Cut
COPY PASTE
delete
SELECT ALL
CHECK SPELLING
INSPECT ACCESSIBILITY PROPERTIES
INSPECT

There is no way to select Options.

So how do I proceed?


Exhibit 1
How do I revoke Web Push permissions for a specific site?

Web Push is always opt-in in Firefox. A site cannot send you push messages without your permission. To stop a specific site from sending you push messages:

Click the menu button and select Options.
Click Privacy & Security from the left pane.
Scroll to the Permissions section.
Click the Settings… button next to Notifications.
Select the website.
Click the Remove Website button.

To stop all sites from sending you push messages, follow the steps above but instead of selecting a specific site click the Remove All Websites button. Websites will not be able to send you messages and will need to ask your permission to send them in the future.
To stop notifications on a specific webpage (requires a page reload): Click the padlock Gray padlock - Firefox 70 to bring up