VK is an intentional tool when you place intentions or when you have clear positive thoughts it follows you while you wear it.
The more clearer thoughts and repeated it is ….it wil follow you more on that particular thought.
Regarding specific energy systems….the energy system is designed to act on a particular issue like TOTAL WEALTH SERUM will work on areas of prosperity.
HEART SERUM will work on blood circulation and heart and heart chakra .
So here you dont need to place an intention. You just have to know where or to whom the energy is to be sent. So the intention is only for the receiver whom you want should receive it.
However sometimes we do direct energies with intention. Like a small child swallowed a ring. So ALL clear serum was given with intention for it to come out of body.
A person who has constipation so you can keep VK on abdomen with chanting of ALL CLEAR SERUM.
Sometimes a person has fear of heights and is performing some feat so you can place energy of BRAVO SERUM while he or she is doing the act.
So choose accordingly