You can change your personal details such as name, email, phone number, mobile, fax, website, date of birth, address, language, time format, time zone, signature, and even name format and theme color.

To change personal details

1. Log in to CRM with Administrator privileges.
2. Click   > Click Setup >  Go to GENERAL > Click Personal Settings.
3. In the Personal Settings page, click Edit for the corresponding section and Modify the personal details as per your preference. 
4. Make sure to Save.