Plan update

[Dharma_Mala108]

Hello. Yesterday i bought an annual Pro plan. And i realised that it can not provide two parallel conferences.
So i read that Business plan can. I tried to upgrade Pro plan to Business, but i have two problems.

Business plan shows that i should buy minimum 10 licenses, but i need only one.
And i don't know if this upgrade will count the money i already invest in the Pro plan.

Can anyone help?