What is a meeting “in caucus”?

How a mediation unfolds, in other words how it happens in practical terms, depends on a whole host of factors including the level of conflict/tension between the mediating parties. These days, many mediations are conducted virtually (and I offer that option too) ~ the parties and the mediator connect through their devices using platforms like Zoom. The comments about caucusing that follow are relevant to both mediations taking place in physical premises and those that are virtual.