If you select Communication in D2L, there is now an option there for Zoom Meeting. This is part of the integration.
There is a video how to set up a webinar from the course at https://tech.msu.edu/service-catalog/teaching/tools/ (link). They are working on getting one set up for meetings as well.
There is some documentation from the University of Arizona here: https://help.d2l.arizona.edu/content/instructors-zoom-d2l-access (link).