I have posted my question in here -> https : // stackoverflow . com / questions / 79324194 /in-odoo-17-where-can-customize-the-menu-when-the-gear-icon-is-clicked (please removed the spaces) since I cannot post images and links here.

Here is the gist, I am just new to Odoo and the custom addon was passed on to me. I need to correct the spelling on the menu and add some link/functionalities when the Gear Icon is clicked. Using the Inspect tool of the browser, it has a class fa fa-cog. I checked using the Find in Files of Visual Studio Code and I cannot find it. I think this is inherited from Odoo. I check the template's XML file inside the addon module but it was not there. When hovering in Developer mode, the tooltip says "Actions"

How can I fix it?