The Properties list is displayed in a table at the bottom. Scroll the list if it is too long to show in the Document Info.
Note: Persons and groups added using the Person or Group dialog are displayed in the Properties window as defined in SharePoint. For example, you can configure the column in SharePoint to show the selected person's or group's email address, instead of name.
If the document library requires checking out documents, you will be prompted to check out the document to start editing properties. Tap Check Out.
In edit mode:
Read-only properties are not shown.
Required properties are indicated with an asterisk (*). If the value of a required property is empty, you will not be able to check in the document and it will not be available to other SharePoint users.
You can edit the value of many property types directly in the grid of the Edit Properties pane. For more advanced property types, such as Multiple lines of text, Date and Time, Person or Group, Hyperlink, Managed Metadata, or Enterprise Keywords, tap the property value to open a pane or a pop-over from which you can edit the property value. Tap Done when finished.
Tap Save to save your changes to SharePoint.
If the library has versioning support, you will be prompted to check in the document to make it available to other SharePoint users. Tap Check In.
To edit Managed Metadata and Enterprise Keyword properties: