LCD display using 4 Buttons

I just got a 204ZFA LCD display. A link below is the wiring diagram. I am wondering if and where could push buttons be placed in the configuration. I want to have 4 push buttons to toggle between values, setpoints, read/write clock times, and alarm times, etc. I am going to be entering letters and numbers in my code via the buttons to save in the Arduino’s eeprom so will 4 push buttons even work for this application or will I need to use the LCD keypad that has 6 already soldered push buttons? Thank you

the 6 button link

6 buttons would be easier to program.
Up, Down, Left, Right, Accept, Quit

You can use fewer buttons but would then need to code for short and long presses to be recognised.