Editing an authority record automatically changes the contents of fields in bibliographic records that are linked to that authority record.
To edit an authority record:
In the following screenshot, we select the Edit action to invoke the MARC editor:
In the following screenshot, we change the 100 $a subfield from Smoljarčuk, V. to Smoljarčuk, Vladimir in the authority MARC Editor:
In the following screenshot, we see that the bibliographic record's linked 100 field has automatically changed from Smoljarčuk, V. to Smoljarčuk, Vladimir: