You can manage your profile by clicking on your profile image (which may be a default logo), at the top right of the page. From the dropdown that appears, click on Edit account.
Here you'll see all the things you can currently edit against your profile.
Your Do IT ID lets you edit your name, email address, and password associated with your account.
'Personal info' lets you set the phone number, date of birth, and gender on your profile, as well as your current address which is used to power opportunity recommendations.
Your Public profile allows you to change your profile image and set an optional bio or about info.
In the "Personalisation" section you can update your purpose - the interests and the causes you that are important to you. These enable us to recommend suitable volunteering opportunities and other activities to you.