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Set an internal name (60 characters max.) and a code (8 characters max.) to your mapping table.
Seat categories tab
Then the idea is to define "I've got a physical category 1. If i'm in an event in my logical conf A, what should it correspond to? in my logical conf B?"For each given physical seat category that is used in a logical configuration "A", you could define what is the corresponding seat category in a logical configuration "B".
Let's take an example: you want to sell a season ticket with events happening in 2 concert halls :
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In order to create season ticket catory category 4, click on on 
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And fill the following:
Seat category is the mapped category that will be used in the composed product.
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