How include a second file

Hello everybody
I got a sketch for a VFO from a friend and an utiles.h file, with the menu information. How can I integrate this file into the sketch? With #include <utiles.h> I always get the error message file or folder does not exist.
Greetings Guenter

With #include <utiles.h> I always get the error message file or folder does not exist.

Where is the utiles.h file on your PC ?

Start by putting it in the same folder as your sketch and use

#include "utiles.h"

in the sketch