[Koha] Problem in creating new authority types

[Ms. Naveen Ali]

Dear All, 
I am trying to create new authority types in KOHA 21.11 on Ubuntu 20.04. 
I am following this documentation Create new authority type - Koha Wiki ( https://wiki.koha-community.org/wiki/Create_new_authority_type ) 
In the section on Zebra, 


    * I cannot understand how the att numbers are defined 
    * I cannot follow the next two steps, which require record.abs file. I cannot find the file. Neither the one in biblios nor in authorities folder. 
I need to create two authorities, namely, publisher and place of publication to accommodate my existing data which I will be migrating to KOHA. 

Support will be greatly appreciated 


With best regards, 

Naveen Ali 

ITM-JE (EAKL) 
Inst Representative for 
HEC Digital Library Resources. 
NEDUET, Karachi.