For Control Panel (2022 release)

1.  After you login, Click the "My Dashboard" tab from the side menu
2. Click The "Profile" tab form the side menu
3. Click the password tab at the top of the content toolbar 
4. fill in the field with a your new password

For Classic Site (pre 2022 release)

1. After you login, from your home landing page, click on the My Account link in the upper right-hand corner.
2. Click the Password sub-tab.
3. Fill in the required fields, then click the Save button.