The final stage of any marketing planning process is to establish targets (or standards) so that progress can be monitored. Accordingly, it is important to put both quantities and timescales into the marketing objectives (for example, to capture 20 percent by value of the market within two years) and into the corresponding strategies. Marketers must be ready to update and adapt marketing plans at any time. The marketing plan should define how progress towards objectives will be measured. Managers typically use budgets, schedules and marketing metrics for monitoring and evaluating results. With budget, they can compare planned expenditures with actual expenditures for given period. Schedules allow management to see when tasks were supposed to be completed and when they actually were. Marketing metrics tracks actual outcomes of marketing programs to see whether the company is moving forward towards its objectives (P. Kotler, K.L. Keller).