Seeding populates your current plan with historical data, so that you can build out your plan by updating what you have actualized in the past. While seeding you can choose the year you want as your source and specify the months you want to bring into this year.
Say you are building out a new plan for your organization. Most likely your plan will resemble your plan from last year, but you will want to change your growth, margin and inventory targets. Also, you will likely adjust the spread between dimensions for this year. Seeding helps you precisely with that. You select last year as your source and specify that you are planning to bring in data from the entire year and boom! You have this year’s plan automatically populated from last year. See below for how it works in action: