Account settings
Click on your avatar in the top right corner and select “My account” to change your account settings.

My Account
Account
On this tab you can change your:
Photo / Avatar
Username
Display name
Password
You can also setup two factor authentication with One-Time-Password Authentication.
Profile
When the address book module is installed. You can set your profile here. A contact is created in the users address book when you enter your profile. The users address book is configurable at System settings -> Users -> Settings.

Profile
Look and Feel
Setup:
Regional settings
Notification and sound settings
Theme and user interface options
Working week
Setup the number of hours your work each day of the week. This information is used in the holidays and absence module to calculate the number of hours for periods. It’s also used in the time tracking module.
Synchronization
Configure what will be synchronized to other devices with CalDAV, CardDAV and ActiveSync.

Synchronization
Modules
Depending on the modules that are installed other tabs appear here too.