These forums are more for people willing to learn rather than to "provide solutions". There must be a million Instructables or the like to achieve what you are after.
If the program had an alarm as well, that would be great. I am using arudino 1.8.1. Notic: I am new to arduino.
I don't know about any ready-to-run Arduino code for an UNO and a LCD Keypad Shield and DS3231, but the components can be used, no problem.
What about powering the device?
Are you going to use an USB power adapter for all (UNO board, LCD Keypad Shield, RTC module)?
What about a test setup and using some test code as a first step?
Did you already attach the RTC module to the shield?
The shield is just to be stacked on the UNO, connecting the RTC module requires some soldering for four connections:
Connect shield 5V to RTC VCC
Connect shield GND to RTC GND
Connect Shield analog pin A4 to RTC SDA.
Connect shield analog pin A5 to RTC SCL.
(There are small soldering patches available at the shield, which can be used to connect a wire by soldering)
Are you ready with that?