Edit Multiple Records
Click in a Box on the left of a record to select the records you wish to mass edit, you can click the Check All button (to the left of the Edit Selected button) to select all records in the List.
The Form shown below will then appear, this will allow you to make the same edits to each selected record.
The Yellow Warning Bar will indicate the number of Records selected and will clarify that changes will affect all of these records
NOTE: Not all Fields can be edited, only records that share the same value are populated.
Be sure to Press the SAVE button after editing.