--- title: "Create calculation group" slug: "create-calculation-group" tags: ["Task", "Project Control Suite", "PCS"] updated: 2026-03-20T08:34:29Z published: 2026-03-20T17:45:57Z canonical: "docs.staedean.com/create-calculation-group" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.staedean.com/llms.txt > Use this file to discover all available pages before exploring further. # Create calculation group Use calculation groups to define: - The formulas that are used to calculate the estimate line quantities for activities in the work breakdown structure. - The models with the default formulas for each transaction type. - The setup that is required for progress billing: a variable that is marked as scheduled unit. For progress billing, usually, the scheduled unit variable is a percentage. - The setup that is required for subcontracting: a variable that is marked as scheduled unit and for which the unit is defined as well. Reason: Subcontracting uses purchase orders, and on the purchase lines a unit is required. - A cost price (expense) or sales price (expense) for a specific scheduled unit. ### Steps 1. Go to **Project management and accounting** > **Setup** > **Advanced project management** > **Calculation groups**. 2. Click **New**. 3. In the **Group** field, type a value. 4. In the **Description** field, type a value. > [!NOTE] > **Notes** > > You can also make a copy of an existing calculation group and modify it. To do so, select a calculation group, click **Copy group**, fill in the fields, and click **OK**.