You’ll need access to this area of the Part Catalog

Then under Part Characteristic,  Discrete or Variable depending on the type

Thank you. I am in there, but I still cannot seem to create a new Code. I am ultimately trying to put on a new symbol to our existing shipping label

Then that will be a permissions related restriction as this is considered setup or basic data. 

Given your title and job function, we wouldn’t allow the update by a user in a similar position in our company. It is a change request that goes through IT, then someone in IT adds it.  Maybe a similar process for you.

    Me too same problem .. I am also looking for a solution

You need access to this group of Presentation Objects