Here's a 20-minute class on how to do a MA list side transaction in Dotloop.
https://laeruniversity.com/courses/simple-dotloop-strategies-for-laer-agents/lectures/17248696
Also, if you need help understanding the forms, check this article.
How Do I Do a MA Buy Side Transaction
Here are some helpful guides as well:
Dotloop Help - Creating & Submitting Loops
Unable to Submit for Review? - What To Do