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.