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JIRA is used to track the status of a quote, and the Table Grid Editor is used to list all the line items in the quote.
One of the columns contains a list of available products. This dynamic list is based on a driving table, maintained in the JIRA table grid editor admin.
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Configure the products columns in the Quote Line items table
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In the JIRA administration navigate to Add-ons - on the left menu, under Table Grid Editor administration choose Driving Table Admin 
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Now you can see the Driving Table admin page where you can manage driving tables:
add a new table
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modify the existing table
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Use the same approach to configure the driving table as you used to configure the table grid
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The user has access to the list of existing driving tables, can create a new driving table, add/edit data in the existing one. 
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The access is limited and it's not possible to remove or change existing configurations.
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More advanced configurations are possible such that you can model any information. For instance if you want to create a pricing table where prices depend on the product and the tier:
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