Dr. Sam "Smiley" Shapiro, DDS, has just graduated from a prestigious dental school in the Western United States. He has asked for your assistance in classifying the following actions/decisions within the context of the planning and control cycle: Plan, Implement, Evaluate, and Revise.
Item # Description
1. Whether to hire two or three dental hygienists? Dr. Shapiro has narrowed his choices to two or three hygienists based on expected patient volume.
2. Prepare a staffing schedule so that at least one hygienist is available during all times the office is open.
3. Track the number of patients seen by each hygienist per week.
4. Reevaluate the adequacy of current staffing levels.

Required:
Classify each decision according to its stage in the planning and control cycle. Provide a brief rationale for each classification.