Hi @consome_punch. Welcome to GoDaddy Community! If you're not seeing areas that are mentioned in that Help Center document, it's likely you have a different type of account. Those instructions are for our oldest platforms.
If you have a Linux account, you can change directory and file permissions in a number of ways. Usually via the File Manager for the hosting account you have or even via FTP/SFTP, if you have a client (like FileZilla) that supports it. Most of the time these can be changed/updated using the right-click context menu. For information on updating permissions in cPanel, see here. If you have a Managed WordPress account, then you'd have to make the changes using SFTP.
If you have a Windows hosting plan, you would not be able to change file permissions, but you can still change directory permissions, which usually affects the files that are in the directory you change. You can see instructions on changing directory permissions in Plesk here.
JesseW - GoDaddy | Community Manager | 24/7 support available at x.co/247support | Remember to choose a solution and give kudos.