To be inserting an object into a space or area is trying to ensure that it, or whatever it represents, is drawn to our attention and given relevance in a spiritual sense.
Psychological / emotional perspective: Dreaming of an insert in a paper or making an insertion in a document signifies that there is an idea or concept that we must include in our considerations.
Material aspects: With relevance to working life, making an insertion suggests that we are wishing to influence an outcome.
For someone else to be doing so suggests that there is an influence we have not considered.
Gives gender - specific: In both men’s and women’s dreams, insertion frequently has the same connotation as penetration, albeit from their different perspectives.