@Manmit energy through VK doesn’t get disturbed if you have many people on list to send energy. Energy gets divided into all the people who are receiving the energy. If we talk only about Love Serum then it has to be worked on all the people together as they all need to be loving. So write all the names and keep sending the energy to all who need the energy.
But if we talk about any other Serum then that is for sure that energy will get divided according to the need of the recievers.
You can send energy either together or individual, as it is easy for you. Sending energy together for all would save your time. May be divided but all will receive some energy than none.