In order to use a virtual event integration you've created with your event, the integration needs to be selected to be used with the activity in your event. To do that, navigate to your event and to the Activity Management module. Once there, you have two options. You can either modify the event-wide activity settings to use this integration in all of your activities, or you can set it up for specific activities.
In order to add the integration for use with all of your activities in your event, navigate to the Engagement Settings and expand the "Add video integration" section. There, under the "Video integration" dropdown menu, select the integration you'd like to use and click Save.
In order to add the integration to a specific activity, navigate to the Activity Management module in your event and the Activities list. Find your activity in the list and click on it. Once there, navigate to the Settings tab and turn off the "Use global settings" switch. Then expand the "Add video integration" section, select the integration you'd like to use with this activity under the "Video integration" dropdown menu and click Save to save your configuration.
Once you save your configuration, your participants will be met with the virtual event integration you've selected for your activities when they follow the Engagement App button they receive via an email.
For more instructions on how to test the virtual event integration you've added to your event, see this article.