How do I create a pause button?

I want to create a pause Gui button that pauses all the elemnts of my game and that if you clic it again, it unpauses.

Before you learn to use a pause button, you must learn to use the search button.
It is in the top-right.

This question has been asked and answered countless number of times.

What the nutbucket Why don’t you answer… I need it to cause I am a highschool student just learning, our teacher is lame and helped us on Robot Repair up untill it comes to making the pause button and the add more time button. Noone in our class knows how to create it. Please help.