To enable Baselines, you may need to launch the Project Baselines Add-On.
Project baselines track schedule changes by taking a "snapshot" of project's fields when the PM saved the baseline.
There is no limit to the number of baselines that may be saved for a single project.
From within your project, see Views > Options :
Then click on the Project Baseline tab:
Save a baseline
- Enter a name for the baseline in the Set Project Baseline input box
- Click Create New Baseline
Display baselines in Reports
Reports display whichever baseline set to Current.
Choose a different baseline for baseline reporting using the Set as Current hyperlink.
Quick Tip: The exception is Project Reports may display all baselines (not only the current baseline).
Display baselines in Task List and Gantt Chart
Use columns or row settings in the Page Display Options.