Editing row data in list view tables
If the Table Drill Down property of a list view table is set to True, users can change the data in list view tables by "drilling down" to the source request. Users must have access permission for the source form, the fields on the source form, and the table field. See Table Drill Down.
To make a column editable, change the column's Display Type property to Editable. To store the edited values, use workflow to push them to the source request. See Workflow considerations for table fields.