It's a pretty simple idea conceptually. Both hands are playing the same rhythm, usually steady 8th notes or triplets, but the hands are accenting in different spots. A tricky idea in practice! So here's 2 possible ways to play/apply it. First one is with brushes and I'm playing 8th notes in both hands, but the RH is accenting a 7 beat on/off pattern and the LH is playing dotted quarters….
The 2nd example is playing a shuffle in both hands w/ the LH mainly accenting 2 & 4. (Hmmm, what's the application for this? A Blues Band with an identity crisis?)
Next is the shuffle again w/ RH accenting 2 & 4 and LH playing a 5 beat pattern… The one following it is the same except I've switched to str, 8ths and the LH is playing cross stick.
Next, I'm playing all triplets/12/8 with both hands and the RH is accenting a shuffle while the LH accents Jazz/Displaced quarter note triplets
Finally, I'm playing triplets again. LH is accenting a 4 beat pattern and the RH is accenting 2 & 4.
I recall going through one of Chuck Silverman's books that had a beat which was a Bossa with accenting 2 & 4 and a contrasting Partido Alto LH part with accents in completely other places. It nearly killed me, but I eventually learned it, and gained so much accent flexibility in the process. My hope is that these exercises will help you in the same way. Have fun and be kind and gentle with yourself.