Abstract: In one embodiment, a method includes displaying in a user interface of a computing device, multiple content block objects of an online event and an interactive element to begin the online event in sequential order. Each content block object includes a content object type and content associated with the content block object. The method includes receiving a selection of the interactive element to begin the online event. The method includes causing the content associated with a first content block object to be displayed through an audio-video communication session, the first content block object being first in the sequential order. The method includes, upon completion of the content associated with the first content block object, causing the content associated with a second content block object to be displayed through the audio-video communication session, the second content block object being after the first content block object.