Your WMP is kind of like the owner's manual for your car. After you have configured your water management plan, you will have an "owner's manual" that says what should be done to your water systems. Just like you're the one who needs to change your car oil, you'll need to start implementing the measures that are in the plan. You should also document what you do, either directly within the platform or in outside logs.
There are some tips and help notes within the platform to help you through it. The process isn't complicated.