What is the meaning of different markers in the web app?

In the floor plan, all workspaces and rooms are indicated by markers. The color of the marker has a specific meaning:

Green: Workspace is available.
Orange: Upcoming reservation (less than 20 minutes away).
Red: Workspace is reserved and/or checked in.
Gray: Workspace is unavailable/blocked.
Zone (break view): This is a zone with availability indication based on capacity.
Zone (percentage view): This is a zone with availability indication based on occupancy.