Oh Ok, Is there a tutorial on how to do that some where. I'm pretty sure I can try to do it with the proper instructions
No, there's no tut
Im the only one that uses this, figured it out by myself

This is wat you do
*backup this file(outfit)
*open this outfit with Simpe
*click on the left on propertyset
*click on the right on the outfitname ''afbodysuit-tartenskirtbeigecoat''
*you see on the bottom the CPF Editor window(make sure youre in pluginview)
*click the line overridesubset1, there you see the Sandals(groupname)
*Change the sandals into mules on the right side in the value window.
*click commit and save.
If you now open bodyshop the sandals are replaced with the mules on your outfit, make a recolor and fix the textures.
You can do the same with the sole except that the sole needs diffrent shoesounds.
You find the shoesounds also in the CPF editor
Change the value of it into 4 instead of 3
You find the uvmaps for the others shoes
here, or use the FM shoetextures.