Everything so far has been read-only. This episode makes the sheet writable. A measure from the semantic model is a native measure; anything created inside the planning app is a visual measure - and the first one we build is a data input measure, Revenue Plan, created from Revenue Actual as the reference. Then the part planners care about: turn on the column grand total, type 300M into it, and the delta distributes down the hierarchy by the weights of the reference measure.
