1 While logged in to your Google account(s), click on the drop down menu in the top right corner next to your name and select “ Switch Account 2  “. When the dropdox changes click “ Sign Out Of All Accounts 3  “. Sign back into Google with the account that you want to be the default account. Sign back into Google with the account that you want to be the default account. 2  Use multiple sign in to sign in to your other accounts. 3  Same steps as above except in step 2, click “ Sign in to another account “.