Since progress lines are added to the Gantt chart, first make sure you’re in a Gantt chart view. Then, click the Tools menu, choose Tracking, and click Progress Lines.

 

 

That command will open this dialog:

 

 

There are three types of progress lines that you can view:

 

Permanent Progress Line (circled in red)	Choose to always display the current progress line, at the current date or the status date.
Recurring Progress Lines (circled in blue)	Choose a date to have a progress line appear at every day, week, or month.
Selected Progress Lined (circled in green)	Set specific dates to have progress lines appear.

 

At the bottom right hand corner of the dialog, you can choose whether you want the progress lines displayed in relation to the actual plan, or to the baseline plan.