You can update your personal particulars by accessing your Profile.

Hover over the name located on the top menu header bar. Click on Profile.

Click on "Edit" icon to edit Account Information under the Profile tab.

You may click on "Retrieve MyInfo" icon to retrieve MyInfo Data which will then be auto-populated.

You can also choose to click on "Clear MyInfo" icon if you want to manually enter details that are different from MyInfo records.