A red dot next to a Function or Superfunction on the Organization view means that the Function has not been allocated to a team - we refer to this as a gap. You can allocate the Function to the team by dragging and dropping it from the sidebar onto a team. The red dot will disappear to show it has been allocated.
In the below example the Function 'Inventory Management' is the only Function from the 'Finance' Superfunction not assigned to a team and so has no red dot next to it.
When on the Teams view, a red dot next to a Function means that although the team is accountable for it, the Function has not been allocated to a person in that team.
In the below example we can see that all Functions the Operations team is responsible for have been allocated to someone in the team, with the exception of 'Administration Process Development' which has a red dot next to it.