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.
Steps
Go to Project management and accounting > Setup > Advanced project management > Calculation groups.
Expand the Models section.
Click New.
In the list, mark the selected row.
In the Model ID field, type a value.
In the Name field, type a value.
In the Hour formula field, enter or select a value.
In the Expense formula field, enter or select a value.
In the Item formula field, enter or select a value.
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.