With Calliflower's document sharing feature you can conduct lecture style, or collaborative meetings.

Enabling presentation mode will prevent your participants from entering comments, highlighting material and adding/downloading your presentations.

In collaboration mode, you and your participants will be able to add documents, switch slides, enter comments into the presentation, and highlight some sections of your posted documents.

To enable any of the two modes just click on the Enter Collaboration/Enter Presentation mode button at the bottom right side of the document sharing pane.