First of all I have opened the Gmail app and I have logged in, then I have followed the following steps:

I entered the snail of “Configuration” that is at the top.

Then I entered “Show all setting”

I appear in the “General” section and I have to go to what says “Filters and blocked addresses”.

There we will find a button that will allow me to create up to 1000 filters, which I can say of doing many things, to create it I have to put the mail of who we want to redirect the sent emails and where, in this case I have said that the emails of my professor Antonio go to the label with his name, so that all his emails appear there.

In my case, I have created a filter for each teacher, one for my classmates, one for all classroom notifications and one for my professional email, all of them without the option to remove from the inbox.