How to use two breadboards in one Arduino

it will probably be a noob question, but how do I use two breadboards with the same Arduino (Pro micro)? I added a multiplexer in my project and even though the breadboard of the largest size it was missing space, I have another breadboard left and I wanted to externder the project. Can someone help me?

[Sorry for my bad English, I'm from Brazil.]

Thanks :slight_smile:

but how do I use two breadboards with the same Arduino

You take the wires from the Arduino on the first bread board and you link them to the second breadboard.

Most solderless breadboards have tabs and groves, so you can fit them together.

Thank you guys!!