New profile -watermark-

i wanted to create a new profile with watermark (pdf) in this program, but it does not work.
is there anywhere an instruction how to do this?
I can not select/choose athe pdf-file which will be the watermark/header of the to be converted word file...
thanks for support/help

the background feature might be what you're looking for. Please see if the following user guide article is helpful:

Kind regards