Positive energies that relate to the same purpose can be added together. For example, health energies related to the same health issue can be taken or send together to a receiver.
Different types of Energies that can be grouped together are many. Some examples are Cosmic Serums, mantras, Switchwords, words, sacred codes, healing numbers, affirmations, gemstones, Bach flower remedy, angelic healing, etc.
It is suggested to use a maximum of 5 energies at the same time in one set.
Also, remember do not mix 2 different types of energies in one set which are not for the same purpose. For example, health and wealth energies should not be mixed in one set as their purpose is different.