How to add a mini-script to the toolbar

How do I add a custom tool to the Matlab toolbar? I was in a Matlab course and the instructor had us add a tool to the toolbar (just to the left of the search bar). I'd like to use this feature again, but I don't remember how he did it.

The tool was a simple script that closes all figures, and clears variables and the command window:

clc
clear
close all

Answer 1

[Fangjun Jiang]

https://www.mathworks.com/help/releases/R2023b/matlab/matlab_env/create-matlab-favorites-to-rerun-commands.html