How to make the number of a label, rise alone without clicking (clicker game)

i put buttons, and i want when you buy those buttons, they start to add numbers to clicks numbers label.
for example you got 30 cookies (food), now you can buy special chocolate button which clicks for you +1 each second, so more cookies.
which are the blocks? i heard you have to put a cronometer in the game or something like that
thank you

You’ll need a clock component. Once you buy the button the clock becomes enabled. Each time it fires it clicks the buttons thus causing the label to increase by 1.

You’ll need one clock per button if the speed at which they click is different.