Generally, it is better, faster and more economical if you are present and involved in all steps of the process. That being said, I understand that there are a lot of demands on your time and while organizing may be a priority, carving out large blocks of time to get it done may not be feasible. If this is the case, we can come up with a plan that minimizes your involvement, while still maximizing the benefit to you.
You do have to be present at the assessment where we discuss your needs and expectations. You also need to be involved in determining what you want to keep and what can go, as I cannot make those decisions for you. However, working based on a plan and parameters we develop together, I can work independently to complete initial sorting and purging, leaving you to review the work at a time convenient for you (I will never dispose of anything without your consent). Then I can work independently to organize the space, walking you through it when the project is completed.