Settingsbutton as a gear icon on the top right.
Settingsbutton in the pop-up menu.
Accounts and Importtab.
Please note that the Gmail password is a universal password for all your Google account. If you change it, it will be changed for other Google services as well.
We recommend changing passwords from time to time, as this is useful from a security point of view. If you want to give someone else access to your mailbox, use backup codes (they only work once). We will surely tell you how to use backup codes in our next article.