Hello, @Luciano,
If you want to set the layout condition to the products under the same category then you have to choose the “In Category” condition and choose the particular category to apply that layout, please see the below-given screenshots:
https://ibb.co/W0VFHYj
https://ibb.co/N1Vs6CJ
And if you want to apply that layout to the particular product only, then you have to choose “In Product” in the condition and choose the product as per your requirements: https://ibb.co/2ZMPxsn
Regards 8Themes Team.