Remember to enable galleries in your collection
To use the galleries feature it has to be enabled in your collection.
Galleries are not enabled by default, to learn how to enable them, visit the Manage Galleries section.
Add galleries using the Batch Mint Wizard
Video Tutorial
Add column galleries to the CSV file
To use galleries in the mint batch wizard you need to add a seventh column in the CSV file containing the name of the galleries for each item
Select the NFT author
When starting the wizard select the author that will own the NFT Items created, this will be also the user that will own the galleries created
Continue with the usual steps
The rest of the steps will be the same as a regular Batch Mint proces
Learn more about the Batch Mint Wizard Galleries in the Backend NFT Items