First! All addons are included for FREE with Prima Elite so don't waste your money buying them!
Addons are optional modifications to your body that you can purchase separately (except for Prima Elite where they are included for free).
Addons should be ADD'ed when you want to wear them. In general addons will replace one more sections of your body with the body mods the addon provides.
These bust addons will automatically replace whatever bust you're wearing on your Prima body. After that, your bust will act just like your other bust shapes - you can change it's appearance or adjust your nipple shape, hide/show the HD nipples, etc. Everything available to bust appearance will just work!
However, of course, changing your bust *shape* via the HUD will not work since the addon bust is a new shape.
When wearing the addon use ADD to add it to your wearables.
The product version includes some BOM shading tattoo layers you can optionally use to accentuate the addon bust shaping.
The Soft & Squishy addon provides a set of "squished" areas for your body that can be activated using your HUD, or using scripts that creators (or you!) can use when you wear something created for the squished parts.
When wearing the addon use ADD to add it to your wearables.
The product box (and the regular creators kit) includes a boxed set of scripts that can be used to automatically squish the body when a prim is worn. To use the scripts, choose the one you want and add it to a prim. When the prim is worn the body will automatically squish. The prim must be attached to the body NOT THE HUD for this to work properly.
An easy to use HUD is provided to manually control the "squished" areas:
The HUD shows the current "squish" settings using color. The darkest color indicates there is nothing to squish there. The lightest color shows you where you can squish the body. Finally, the cyan colored pieces show where squishing has been done. From this photo you can also see that the thighs have two possible "squishes" - one for the mid thigh and one for the high thigh. You can click HUD areas multiple times to cycle through the various options. Try it and see!
On the left side are quick select buttons used to easily force the body into a particular shape. You can use these when the the squishy attachment you've worn does not automatically squish the body for you.