Implementation Controls Outline the controls for monitoring and adjusting the implementation of the plan. Spell out the goals and budget for each period (month, quarter, or year) so management can review each period's results and take corrective action as needed. Idea. (Airbnb travel model is quite seasonal. As such, segmenting each season or quarter down to the monthly level and/or around high-travel holidays will provide the most salient data points. Sales Targets / Expectations per quarter...)