How do I modify my name?

Desktop: Click your profile photo, then hover over your name. Click the pen icon on the right to edit. If you're unable to edit your name, your administrator may not have allowed employees to modify their names. If this is the case, please contact your administrator.
Mobile: Tap your profile photo > your name > Name to edit. If you're unable to edit your name, your administrator may not have allowed employees to modify their names. If this is the case, please contact your administrator.

How do I set up my profile photo and signature?

Desktop: Click your profile photo, then hover over your profile photo from the pop-up window to display the camera icon; click this to choose the photo you'd like to use. In the same pop-up window, click Say something about yourself... to enter your status.
Mobile: Tap your profile photo, then tap your profile photo again from the navigation bar > Profile Photo to choose the photo you'd like to use. From the same page, tap Bio to enter your status.