Going automatic or manual

By default, Project is on automatic as far as calculations go. When you make a change to your plan, Project recalculates totals, the critical path, and so on without you having to lift a finger. However, you can change that default setting and have Project wait for you to initiate calculations manually. You do so in the Calculation tab of the Options dialog box (ToolsOOptions). Figure 14-9 shows the settings available there.

Figure 14-9:

Click the Calculate Now button to make Project perform calculations on your command.

If you change the Calculation mode to Manual, you must click the Calculate Now button in this dialog box any time you want Project to perform all its calculations. You also have the choice here of setting different modes for only the current project or for all open projects.

So why would you choose to use manual calculation? You might want to make a lot of changes and not have Project take the milliseconds required to recalculate between each change, slowing down your entry work. You can put things on manual, make all your changes, and then use the Calculate Now button to make all the changes at once.

In addition, because even with Change Highlighting on it's not always easy to spot all the items that have been recalculated when you make a series of changes, it might be easier to make all the changes in manual mode, print your Gantt Chart view, and then recalculate and compare the two. This approach shows you the cumulative calculations that occurred when all your changes were made so you can see whether you're happy with the revised plan. (This feature is especially useful for trying out what-if scenarios.)

In Project 2007, you can also take advantage of the Multiple Undo feature. This means you can leave your calculations on automatic, make changes, and then undo them, thereby undoing the calculations in sequence. For more on Multiple Undo, see Chapter 10.

Options _0

View j General

Edit

Calendar

Save | Interface |

Security Spelling

Schedule Calculation

Collaborate

Calculation options for Microsoft Office Project

Calculation mode: © Automatic

O Manual

| Calculate Now ]

Calculate: {*) All open projects

O Active project

Calculation options for 'Infrastructure Deployment ,,,'

0 Updating task status updates resource status

|_| Move end of completed parts after status date back to status date

| j And move start of remaining parts bac|s to status date

|_| Move start of remaining parts before status date forward to status date

□ And move end of completed parts forward to status date

| Earned Value... j

1 1 Edits to total task % complete will be spread to the status date

M Inserted projects are calculated like summary tasks

M Actual costs are always calculated by Microsoft Office Project

| | Edits to total actual cost will be spread to the status date

Default fixed costs accrual: Prorated

a

1 1 Calculate multiple critical paths

Tasks are critical if slack is less than or equal to 0

sd| days

| Set as Default |

Help

|| OK

1 | Cancel

Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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