Vol 4: Ch 186 - Her unseen messages
The whole concert planning teams are already done introducing themselves. Rei notices that only her team has 5 members including her and only Manager Kim has many members at least 40 since their team is in charge of the props, types of equipment, and costumes team for the concert. The Finance Team is the second least member since the teams are assigned for the cost, expenses, and other concerns about budget or finance for Concert. The Event Teams are consisting of 12 members including their head and they're in charge of the accommodation and location of the said event for the upcoming concert.
The Concert Planning Teams are all focused on the upcoming concert led by their Heads and then the M'Dols Teams are also rehearsing for their performances of the said upcoming concert.