pose 6: you can use it with the pool, the ladder o any other occasion where there is no floor, such as stairs without rails or balconies.
pose 5 is designed to be used in a wall edge (but will work even in the other case). It won’t work if there are columns tho, because columns take a lof of space and make the hand disappear. I advise you to delete them or to use the TOOL mod to move the sim around and adapt.
please see the reference image to know where to put the teleport for the wall poses or for the pool pose. I also put detailed instructions in the package too, ad the bottom of the poselist.
Expressions very much depend on the face of your sims (eyes, eyebrows, mouths, etc). All sims are different and you can have different results!
FOR THIS PACK I STRONGLY RECOMMEND USING THE TOOL MOD, to adapt the poses to your needs. Link below.