How to use custom File Operator?

I have a custom software for operating (moving and copying) files (TeraCopy) and would like to use it in Directory Opus and would like to know if this is possible and if so, how I would do it.

I didn't find a way to change it in the File Operations options and setting TeraCopy as default for copying does only effect the Windows explorer

TeraCopy provides buttons you can use in Opus.