Hey Luciano,
It's possible to customize the excel template using the style area on the template configuration page:
However, it doesn't provide a wide variety of options for styling the file.
Another option would be to use a template file that already has all the styles applied.
If possible, you can also use the "Advanced Excel" module, which gives you greater customization freedom than the Excel Exporter.
In this module, you can customize the style of each cell individually.
Best Regards,
Ricardo Pereira
Hey Luciano,
You need to create .xlsm (you can write script to changed styling) file need to have same structure as your file that will be export after you create your .xlsm file just add it here (to your template).