A presenter in BigBlueButton has the ability to control and annotate content uploaded into the presentation area or the whiteboard.
The presenter role enables the user assigned the ability to:
- control the slide navigation,
- use the slide/whiteboard annotations, and
- enable the multiuser whiteboard for use by attendees.
By default the first Moderator to enter the BigBlueButton session is allocated the presenter role capabilities; if you are a viewer you will need to request presenter status from the moderator.
When a user has the presenter role, the presenter icon will appear over their avatar in the users list.
Once you have uploaded content into the BigBlueButton presentation area you have the ability to control the navigation and visual orientation of the content displayed.
The presenters slide/content control panel located under the presentation display and above your media control icons.
To navigate through your content use the Slide Navigator  located in the presenter control panel; advance using the forward ">" navigation arrows, return using the backwards "<" navigations arrows.
Skip to a specific slide by selecting the specific slide number from the dropdown.
Zoom In (+) or Out (-) , use Fit-to-Width , or engage Full Screen Mode .
The presenter annotations are located to the right hand side of presentation display in the BigBlueButton interface.
By default the Pan  tool is enabled.
Select the Pan tool to display the other available whiteboard tools, which include:
- Text input 
- Line 
- Ellipse 
- Triangle 
- Rectangle 
- Pencil 
- Pan/pointer [default]
To write on the presentation, select the Text Input  tool and draw a rectangle. The rectangle will be the text area.
To draw on the presentation select the Pencil Tool  and drag the mouse button to draw a line.
When the Pencil tool is enabled additional menu options will appear that allow you to to adjust the Line Thickness , change the Line Colour .
Annotations made to the white board can removed by selecting Undo Most Recent  or Undo All .
Enable Multiuser Whiteboard
The presenter can also enable the multi-user whiteboard; when activated all users in the BigBlueButton session can annotate the whiteboard simultaneously.
The multiuser whiteboard must be enabled each slide or each time the presenter transitions from one slide to another.
Each user draws in their own separate layer -- their marks/clear events don’t affect other users.
Enable multiuser is the last annotation control located in the presenter annotations to the right hand side of presentation display in the BigBlueButton interface.
When enabled the icon will change to indicate the multiuser whiteboard is on/live.
Once multi-user whiteboard is turned off, the presenter can clear all whiteboard marks with the clear all annotations option.