Use as many lines as you need for all your accounts and groups. Record them in alphabetical order for easiest use.
To protect your privacy and security, I recommend a code for the user name. For example, if your username is “tmdavis” for your Yahoo email account, then you could write in “Yahoo” under “User Name” for that group.
Use a shorthand form of your password that only you know. For example, if your password is “tmda6543” then you could record it as “tm65.”