make a temperature, humidity and differential pressure system using 2004 lcd

Hii friends,
I am using LCDmenuLib can anyone tell me how to add main screen in this .
Main screen can display date and time and temp. Humidity on 2004 display
I am using htu21d sensor and ds3231 sensor both i2c and one display 2004.

My what’s app no. Is 9782293444