After logging in, to update anything under your profile, including your profile picture, click the small profile picture/placeholder located at the bottom in the left menu bar, and then click the blue Edit Profile button; you may then make and save the changes. To change the profile picture, click the profile picture, and you will get an option to browse and upload the new profile picture. Square (1:1) images in any of the common image formats are recommended.
You can create a custom call code to share with your friends/contacts to join a call at any time.
From the profile page, click the blue Change Password button.
Enter your current password and new password, and enter the new password again to confirm, then click Save Password.