After you attach and align a prop to the CloneBone, the position, size or orientation may still be in need of some adjustment:
Pick the desired part (if you are using any camera tools, you may not select the specific piece of the part but the CloneBone only. Please switch to the tool to click on or the tools to double-click on the desired part to select it instead of picking the whole CloneBone).
Go to the Accessories/Modify page and adjust the data in the Transform section to fine tune the part.
If you intend to have the part to be changed along with the CloneBone's specific bone node, you may follow the steps:
Pick the actor and make sure the Inherit relationship boxes (Move, Rotate, Scale) between the target part and the bone node are all checked.
Go to the Actor/Avatar/Modify page.
Change the body proportion in an ordinary manner. Please refer to the How to Change the Proportion of Each Sub Node of an Actor section for more information.