Cuts will require a vector graphic. If there isn’t a vector in the image, the GFUI will only allow it to be engraved.
This topic provides a pretty good explanation of vectors vs rasters: PDF only engraving and need to cut
There is a search icon in the upper right of the site. It looks like a magnifying glass. If you can enter your search terms you can see the other topics that deal with the same questions. Many of these questions have already been answered in depth, so using the search is usually your fastest option to get quality answers to this type of getting started question.
Edit: added forgotten link