Abstract: A structure of an interactive collaboration session is generated. The structure is typically based on an activity defined by a leader of the interactive collaboration session. The structure of the interactive collaboration session comprises different levels. For example, the structure of the interactive collaboration session may contain hierarchical levels that include top level items to discuss, a secondary level for responses to top level items, and a tertiary level for responses to the secondary level items. The structure of the interactive collaboration session is displayed to the leader. The leader controls the participants' display of the structure of the interactive collaboration as the interactive collaboration session progresses. For example, the leader may click on a button that disables the participants' ability to make comments during one part of the interactive collaboration session. Later, the leader can click on a button to enable the participants to make comments.