Required User Privileges: User Admin
It is worth emphasizing that users can edit their own personal information. However, they cannot, for example, change their email address. It is therefore convenient for you to do this on their behalf.
The first step is to click on Manage at the bottom left corner of SalesScreen.
A menu will pop up, where you can proceed to click on Users under the Company headline:
You will then reach the Users Management page. In the list, identify your user and click on the Name:
Once in the Edit user pop-up window, edit the fields that you would like to modify and click Save Changes:
Note that you can also upload a new profile picture for your user by clicking Change Picture under the profile picture and choosing a new picture to upload: