For me the solution was to adjust the over the top of the head straps so that the top side straps were about 1/8 inch above my ears.
When I first started using CPAP last year it took me weeks to get my mask adjusted correctly.
With assorted suggestions from members here on how it should be, and their comments in response to a photo I posted of me wearing the mask, I finally got it sorted to the point where it rarely needs adjusting once I put it on.. and that only involves re-positioning the whole strap/frame correctly on my head, no strap adjustments. ( sort of like adjusting your cap when it isn't straight )
Looking at the strap assembly on your mask I would think the strap over the top of your head, and the diagonal ones across your cheeks would be the ones that stop the mask from sliding down and would need to be tight-ish... the bottom strap could probably be on the looser side adjustment wise.
But people who have used them would be better placed to advise on that.
It may take you a while to get it set up right, don't despair.
Johnboy, reviewing this thread I notice that you didn't say whether your mask is slipping up or down. I think perhaps your jaw is dropping enough to allow your lower lip to slip out. (Hmm, that might be my problem as well.) The mask can't slip upwards because the nose holds it down. If the mask slips down, it will start leaking around the nose, probably into your eyes - you will notice that. The solution to the dropping jaw is a chin strap, either a traditional style, or just joining the lower straps. It probably doesn't need to be one of the big heavy duty straps, just something to remind your muscles not to relax completely.
You don't mention your leak rates, or dry mouth, but look at your SleepyHead data to see if there are any hints there. I see that your pressures are pretty wide open, and I'm pretty sure the Amara View relies on higher pressure to balloon the mask around your nose. Adjusting the minimum pressure closer to your median or 90% pressure (over a period of weeks) may also help the leakage.