You want to create your visual in bulk but you don't have a data source yet, no need to use another tool like microsoft excel, notion database, airtable, google sheet, etc...
You can create a spreadsheet with your data directly on Abyssale, here's how to do it:
Head to the Automate page and select the Spreadsheet generation method
Select the template in which the new variation will be generated.
Give a name to your Task, select the formats of your template where visuals will be generated in this Task and select the Create from scratch option.
You are redirected to the Abyssale spreadsheet created and linked to this task.
Each column corresponds to a layer in your template, and for some of these layers you have sub-columns corresponding to specific layer parameters.
Each row corresponds to a new variation of your template that will be generated (if you've selected multiple formats, the line will fill in each selected format to generate a visual with this data for each format).
To find out more about how the spreadsheet works and its special features, read this article :