For the third option, with Poser 2014 ERC is not so difficult as it used to be. But to sum it up you make the morph as any other morph. Then use the Dependent Parameter Editor to drive it from the shoulder joint (for example). Now we have wrinkles controlled by a shoulder movement. All we have to do is to set up the Erc. If you called your morph Wrink_01, search by that name in the cr2 file and you will find something like this in the beginning of the file,

valueParm Wrink_01
{
name Wrink_01
initValue 0
hidden 0
enabled 1
forceLimits 0
min -100000
max 100000
trackingScale 0.004
keys
{
static  0
k  0  0
}
interpStyleLocked 0
valueOpKey
Figure 2
rShldr:2
zrot
beginValueKeys
valueKey 0 0
valueKey 78.5 1
endValueKeys
}

Change
Figure 2
rShldr:2

to
Figure 1
rShldr:1

Done!