This link will give you the position stand of the American College of Sports Medicine on Exercise and Hypertension.
Depending on where you certified your certification materials should have basic guidelines as well, but the ACSM position papers are really excellent resources to understand particular groups vis a vis exercise.
Hope it helps.
Frequency – most days of the week for aerobic, with resistance at 2 to 3x’s a week.
Intensity: Moderate aerobic, i.e. 40% to 60% V02, with resistance at 40% to 60% 1RM.
Time: 30 to 60mins. of continuous or intermittent aerobic, resistance at least one set of 8 to 10 reps, major muscle groups.
Type: Aerobic can be walking, biking etc., and resistance different exercises targeting major muscle groups, can be bands, tubing, dumpbells, machines.