Speakers add-on is installed and activated just like any other WordPress plugin. If you are unsure about this, you can find detailed instruction on this here. However, in order for this add-on to work, you must have Tickera installed and activated on your website.
Once installed and activated, we'd first suggest you to navigate to the Settings area of Tickera. Once there, you will notice that another tab appeared named Speakers with the following options at your disposal:
Of course, like on any other settings page when you make some changes, hit the Save Changes button.