I am Pro table premium with the annual plan. I would like to onboard one team to help me with my Airtable database data, but I don’t want to pay another annually; I would love to spend the other account as monthly due for only contract base. Now my question, If adding one collaboration, does that mean that I have to pay him annually as well? Or I do not understand the plan instruction yet. What would be the best solution in my case? I hope someone can explain to me.