Obviously this depends on what sort of "meeting" is involved. A brief conversation 4m apart in the park is going to be rather different from a weekend of... especially close indoor contact, as it were.

Basically the R-0 is a virological *and behavioural* average. The average person shedding the average viral load interacting with others in the average way will infect R-0 others. How many meetings (and of what sort) that is you'd have to ask the behavioural modellers...