How to clone a cell style?

Is it possible to somehow clone a cell style in the sidebar style list?
Or what could be the easiest way to have a style “Dollars-normal” be duplicated/cloned to “Dollar-bold”?

On the sidebar, right-click on the cell style to clone, select New, modify as you need. Take care on the Organize or General tab, to set up the name and inheritance.
Please take a look on the help
Calc styles

Well thank you for your reply. Howeveer I do not intend to clone/duplicate a cell style by way of inheriting the formats of the existing one. Unfortunately I cannot edit that into the original question…