Understand why multiple people and overlapping objects can produce incomplete group cutouts and how to evaluate the result.
A group is a harder selection
Automatic foreground detection may favor the most prominent person and simplify smaller figures. People touching each other create interior gaps and overlapping boundaries. A faraway face or a dark sleeve against the background may disappear even while the central figure looks convincing.
Check everyone individually
After processing, review each person from head to foot wherever visible. Compare hands, shoulders and spaces between people. Then inspect shared boundaries: an arm around another person should not become a hole, while an actual gap between bodies should reveal the new background. A count of faces alone is not enough to confirm a complete cutout.
A team photograph with six people across a wide room gives each person fewer useful pixels in the model's input than a close portrait. Preparing a tighter crop around the group may help, provided nobody is cut off. It does not guarantee that every figure will be retained.
Match the tool to the job
If the intended image is a formal team page or a large print, use careful manual refinement where needed. ToolNivo has no control for selecting a particular person and no brush for restoring missing regions. To isolate one participant, start from a suitable individual photograph when possible. Avoid representing an incomplete group result as a clean finished team portrait simply because the background is mostly gone.