Use models in a calculation group to define a set of default formulas. You can define several models for each calculation group.

For each model, you can define a default formula for each of the transaction types. You can use a formula in several models.

Only add the required formulas to a model. For example, if only a formula for hours is required, don't define formulas for the other transaction types.

Standard procedure

1.	Go to Project management and accounting > Setup > Advanced project management > Calculation groups.
2.	Expand the Models section.
3.	Click New.
4.	In the list, mark the selected row.
5.	In the Model ID field, type a value.
6.	In the Name field, type a value.
7.	In the Hour formula field, enter or select a value.
8.	In the Expense formula field, enter or select a value.
9.	In the Item formula field, enter or select a value.
10.	In the Equipment formula field, enter or select a value.

Notes

On a calculation group, you can define several formulas for a transaction type. If you have done so, on a work breakdown structure, you can change the default formula for an:

• Activity - You can do so on the Work breakdown structure form, in the Calculation section, in the Formula selection group.
• Estimate line - You can do so on the Work breakdown structure form, in the Line details section, on the Estimated costs and revenue tab, in the Formula field.