How To Draw A Gantt Chart For Items Not On Critical Path

Hi Paul, your help would be appreciated. 

The question from the mock up exam is: Using the fully analysed netword on the ‘back page’, draw a Gantt chart showing the critical path and total float for all items not on the critical path.

Showing the critical path was wasy to do following the book explanation, but I’m not sure how to show the total float. In the book it shows the Free float by dotted line, but can’t remember finding how to show Total Float on Gantt chart. Can you please tell me how that is done, or point me to somewhere I can see it.

Thank you

Laila