You can add multiple surcharge lines to the calculation, for example one surcharge to be applied to the parts, and another to be applied to equipment.

The default data of the surcharge you are adding are copied to the calculation line. To use different values, click the chain icon () of the field you want to change, in order to break the chain. You can now change the default values.

If you leave the chain intact, the surcharge is linked to the default value specified in the Surcharges file. When a sum or percentage in this file is changed, this change will also be applied to the calculation lines that are linked to the default value. If the chain is broken, the value in the calculation will not be changed.