You can do this via the Resize component using the following settings
This will ensure that no other boxes are resized. It will also ensure the content is not scaled.
In addition, you can also pass the dimensions for resizing via MAX. When you define MAX variables as numbers you will be able to use them in some of the numeric fields in FFCore
Alternatively, you could adjust the trim box inward (or ourward) by a given distance. This will allow you to use the preset with documents of any size.
Last thing - ensure the alignment is centered (which is the default)
