Explanation
Multiple Forecast Types must be created and activated to enable forecasting for different product lines that have different sales stages. A Forecast Type is a set of settings that define how forecasts are calculated and displayed for a specific business scenario, such as product line, territory, or revenue type. A Forecast Type can use either standard or custom opportunity fields to group and filter forecast data, such as Type, Product Family, or Territory. The Forecast tab should be visible to easily view the forecasts, as it allows users to see their forecast amounts, quotas, adjustments, and categories in a single page. Users can also drill down into forecast details, compare forecasts with other users or periods, and submit or approve forecasts from the Forecast tab.