For 4th density harvestability, a network offers distinct advantages over working alone. The members can complete each other even though their own vibrational purity were not perfect. For graduating to 4th density STS, the aspirants must generally work alone since the very idea of service to self sees sharing as generally undesirable.
There is of course the question of what constitutes a group. Are two people praying for the same thing really praying for the same thing? This is so only if they understand the same things, at least in relation to the prayer. But this hardly occurs outside of the circle of esoteric work.
Separating emotions which propel one onwards from those which limit is a lesson to be learned and practiced. A certain quality of emotional structure is important.
Seeing the unseen means, among other things, discerning the often subtle difference between STS and STO in practical life. Without this discernment of the invisible, consistently choosing one over the other is hardly possible. This is a skill and practice is necessary.

~ Peace and Liberation