Function draw_person_tooltip_on 

pub fn draw_person_tooltip_on(
    scene: &mut Scene,
    transform: Affine,
    text_renderer: &mut TextRenderer,
    theme: &Theme,
    anchor: (Rect, TooltipSide),
    _: (&str, AlphaColor<Srgb>),
    viewport: Rect,
)

A tooltip naming a person: their presence color as a dot before label, the way presence marks them everywhere else, on the side of anchor the control prefers.