The coloured bar at the top of your screen (indicated with a #1 in the screenshot below) indicates your progress across the entire questionnaire.
The smaller coloured bar in the sidebar to the right (indicated with a #2 in the screenshot below) indicates your progress in the current section.
You can view a breakdown of your progress by section by clicking on the sections button (outlined in red in the screenshot below).
This will open up a menu showing each section in the questionnaire and a pie chart (see #1) representing your progress in that section.
Hovering over a segment of a pie chart will display a written explanation of your progress (e.g. Section complete, or Unanswered Questions: 12). Clicking on a segment will take you to that section.
The section with a grey background (#2 in the screenshot above) indicates the section that you are currently working on.
For guidance on completing Checklists, please see our Help Guide 'Completing a Questionnaire'.