To change your account, you will need to sign out of the add-in, then sign back in with your new account.
Using the Amazon Chime Add-In for Outlook
Navigate to your calendar and you should see the Schedule Chime meeting item in your ribbon.
Click the icon and Chime will appear in a side panel.
Click Sign Out at the top of the panel
Sign in with your new account
Using the Amazon Chime Add-In for Outlook on Windows
Navigate to your Calendar and you should see the Schedule Amazon Chime Meeting item in your ribbon.
Click the icon and a menu will be displayed.
Choose Sign Out.
Click the icon again and then choose Sign In from the menu.
Follow the prompts to enter your email address, then Login with Amazon, then email address and password.
Navigate back to Outlook and click on the Schedule Amazon Chime Meeting icon in the calendar ribbon and verify your name is as expected.
Note: When using Login with Amazon (e.g. not AD or Okta), if you change your account, the old personal meeting ID and special meeting IDs are no longer valid. You should update meeting instructions that you created with the previous account.
This video describes the process of changing meetings when using the Amazon Chime for Outlook add-in for Windows: