Add UHMVisibilityComponent to any actor to make it visible on all Holographic Map actors. The component registers itself with the HolographicMapSubsystem (a World Subsystem) on BeginPlay and unregisters on EndPlay — no manual bookkeeping needed.

Properties

Marker appearance

Property	Type	Default	Description
Visible In Map	bool	true	Master visibility switch for this actor's marker.
Marker Shape	enum	Dot (Sphere)	Dot, Cube, Cone, Cylinder, Quad, or Custom 3D Model.
Custom Mesh	Static Mesh	none	3D model used when Marker Shape = Custom 3D Model.
Custom Mesh Material Override	Material	none	Optional material for the custom mesh. Empty = the map's holographic material tinted with Marker Color.
Marker Color	Linear Color	cyan	Color of the marker on the map.
Marker Size	float	4.0	Size of the marker in map units (cm of hologram).
Normalize Custom Mesh Size	bool	true	Rescale the custom mesh so its largest dimension equals Marker Size.
Use Actor Rotation	bool	false	Rotate the marker with the actor's yaw (facing direction with cones/meshes).

Placement

Property	Type	Default	Description
Height Mode	enum	Relative Height	Flatten To Plane (classic flat minimap), Relative Height (true 3D position, scaled like the terrain), or Fixed Offset.
Fixed Height Offset	float	2.0	Height above the map plane when Height Mode = Fixed Offset.

Filtering / metadata

Property	Type	Default	Description
Category	Name	"Default"	Free-form category used by maps to filter markers (e.g. "Enemy", "Objective").
Priority	int	0	Higher-priority markers are kept when a map limits its marker count (Max Markers).
Icon	Texture2D	none	Optional 2D icon exposed for your own HUD widgets (not used by the 3D hologram).

Animation

Property	Type	Default	Description
Pulse	bool	false	Make the marker pulse in size (objectives, pings...).
Pulse Speed	float	1.5	Pulse frequency in cycles per second.
Pulse Amount	float	0.25	Pulse amplitude as a fraction of marker size.

Blueprint functions

Set Visible In Map (bool) — show/hide this actor on all maps.
Set Marker Color (Linear Color) — change color at runtime (works for dots, shapes and custom meshes).
Set Marker Shape (enum) — switch representation at runtime.
Set Custom Mesh (Static Mesh) — assign a model at runtime (also switches shape to Custom 3D Model).
Set Category (Name) — change the filtering category at runtime.

Recipes

Enemy dot that turns red when aggroed: on aggro, call Set Marker Color (red) — the change is picked up on the next map refresh.
Objective ping: set Category = "Objective", enable Pulse, Priority = 100.
Player arrow: Marker Shape = Cone, Use Actor Rotation = true, Height Mode = Flatten To Plane.