Changing the Primary Fixing Assembly Name
You can change the name of Primary Fixing Assembly. In case multiple fixing assemblies are used, dedicating one exclusively for the A3 size paper for example, that fixing assembly can be identified by its changed name.
1.
Press 
(Settings/Registration).
(Settings/Registration).2.
Press [Preferences] → [Display Settings] → [Edit Primary Fixing Assembly Name].
3.
Select the Primary Fixing Assembly that you want to edit from the list → press [Edit].
4.
Enter a name → press [OK] → [OK].