Sync to witness screen.
You can control what document and page the witness is looking at by clicking on the "Show Witness This Page" button in the deposition control panel.
Clicking this button will make the witness see the same page you are currently looking at and will zoom and scroll the page to match your own.
Sync from witness screen.
If you want to follow along with the witness, click the "View Witness Screen" button in the deposition control panel.
Clicking this button will turn on 'sync mode' and will keep you in sync with the witness, so when they change the page or zoom in and out, you will continue to see what they see.
Blank witness screen.
You can also make the witness' screen go blank if they get too distracted with a document you have revealed. Click the "Clear Witness Screen" button and their page will go black until you click the "Reveal Witness Screen" button.
Next: Filter exhibits by label.