Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.
NumPad1: Change Money By 5000000
NumPad2: Perfect Guests Needs
NumPad3: Set Skill Level Of Selected Staff To Master
NumPad4: Perfect Staff Happiness
NumPad5: Perfect Maintenance Status
NumPad6: No Refurbishment Required
Perfect Guests Needs: While active your guests are pretty much satisfied.
Set Skill Level Of Selected Staff To Master: Select a staff member and open the skill level page. Press hotkey and this staff member is fully trained.
Perfect Staff Happiness: While active the staff is pretty much satisfied. Game must be unpaused for it to work and it takes a few seconds until changes are visible.
Perfect Maintenance Status: While active rollercoasters have a perfect maintenance status
No Refurbishment: While active refurbishments are no longer required.
Unlock more trainer options including updates from here - Planet Coaster Trainer