What is the grammatical structure and meaning of "there be" in the following sentence. Could it be rephrased more simply?
In view of the above, it is of greatest importance to understand Adlerian group procedures that there be an understanding of the philosophy and the theory of Adlerian Psychology and, having that, understanding group procedures as done by Adlerians will be a relatively simple matter.
Long, S. (Ed.). (2013). Six group therapies. Springer Science & Business Media.