Am transitioning to new MacBook Pro from Thinkpad. I need to page up and page down hundreds (thousands?) of times each day in email, documents, presentations, spreadsheets. Am used to page up or page down being a single keystroke without conscious thought: On the MacBook, I see I can page down by: Press Function key with my fifth finger, left hand. Then, while holding the Function key held down, press Down Arrow key with my right hand. Problem: This - Doubles the number of keystrokes for something I do hundreds (thousands?) of times each day - Makes me move both hands off the keyboard, not just 1 hand - Requires conscious thought, at least right now I realize I can scroll downward by: Swipe 2 fingers up. However, this is not really equivalent to a page down. It’s easy to go too far down and miss spreadsheet rows or paragraphs. Question: How could I make it possible to page up or page down in 1 keystroke or touchpad gesture, preferably with my right hand? Ex: Could I define a 3-finger tap to be Page Down? (and something else to be Page Up?) Would a 3'rd party tool do this?