In Projections by Department, you can set department values by either quarters or years.
To access the stack, click on the Portfolio icon  and then the Projections icon . From the Projection drop-down select Projections by Interval .
Click the Quarter button  and then update Department values  to see how the growth will affect the projection.
You can also click the Year button  and then update the Department values  to see how growth will affect the projection.