Only admin users can do that editing. To do this, click on your photo in the upper right corner and do the following:
- Go to the "Administration" option;
- Select the "Users" option;
- Select the user in which you want to do the data editing (just click on their name);
- In the profile page of the user, click on the edit pen of the information you want to alter (e-mail and/or phone);
- Press the "Enter" key (inside the field) to save the alteration.
Important: When altering the phone, make sure that the country code has also been included. The format is as follows: (country code) (area code) (cell number).