To turn the PERT toolbar on,
click the View menu, click Toolbars and check PERT Analysis. That will
display this toolbar:

Here’s an overview of what each
button does.
|

|
Shows the best
possible outcome for your project. |
|

|
Shows the expected
outcome for your project. |
|

|
Shows the worst
possible outcome for your project. |
|

|
Recalculates the
duration based on PERT fields. |
|

|
Enter PERT values
for the current task. |
|

|
Enter PERT weights
for the current task. |
|

|
Switch to PERT Entry
Sheet view |