Manage App People Profile Fields Page Explained

You can choose which fields to display in people profile on the "Manage Application" > "People" > "Profile Fields" page. Once you select a field to be visible, you can choose whether you allow user to edit that field by clicking on the "User Editable" box.

Please note that if you select to sync a certain field with Salesforce or Workday on the "User Syncing" page, that field will not be editable.

You can also add your own custom field by selecting the custom field in the “Add Custom Profile Field” drop down menu.