How to send out a challenge for a solution to strengthening workbench?

I want to strengthen my Brand New Keter Folding Compact Workbench (Model17182239) to stabilize for planing, etc.

This gentleman added a wooden top with clamps:

And that's PART of what I want but I'd like more stability for planing.  I've thought of a simple making floor brace to keep the legs from shifting along the floor, but I'd like something that will brace the work top from swaying/shaking on the legs too and yet STILL keep the table light weight and portable as possible with these additional features. I'm not new to the constructions environment, but brand new as a practitioner to wood working.

Thanks all!

the modder15 days ago

so ur planing bits of timber yeah

Yes, that's correct.