Installing a solid wood tabletop on this steel frame
What do the purveyors of this table top say about mounting? If it might be a problem, one could consider straps which go over the metal frame and are attached to the underside of the table with two screws for each strap.

Personally, I would just mount it as shown in the picture and see how it performs. You could leave the table top in its intended location lying on the metal base, unattached, for a week or so to allow it to stabilize to the ambient temperature and (especially) humidity . Then drive the screws just barely snug for a month or so and only then tighten to full snug, but not hard tight. It looks like the screws shown have a little wiggle room in the holes in the metal frame.

Edit
You could consider using heavy, large flat washers between the heads of the screws and the metal frame so that the heads of the screws don't bite into the metal frame and so resist sliding.