How to automatically start virtualbox virtual machine?

(Mate 20.04.2 LTS) Hi, I use virtualbox and I would like a virtual machine to be started automatically when I log into the operating system.
I have tried with various guides but with mate I have not succeeded in the intent, I have also tried to put the created link of the virtual machine in "startup applications" but without success.
Do you know how to do it?
Thank you.

here's a link for ubuntu 20.04 but it should work for MATE 20.04

Note: the user needs to belong to the vboxusers group