There are three ways you can add formulas to line items in a model.

## Individual line item formulas

Individual line item formulas apply to specific line items. You can select to include all or only some of the model versions in the formula scope.

## Formulas that apply to a version in a module

Each line item you want to apply this type of formula to must have versions applied and belong to a line item subset.

## Version dimension formulas

Each line item you want this type of formula to apply must have versions applied to it. This only affects line items with a numeric data type.

These also apply to a specific version but their scope of application is the entire model.