It really depends on the organizer and what they specialize in

Some only work with companies, some only work with families, some only work with hoarders or those with ADHD.
I help my families to declutter, find simple organizing strategies to keep it that way once I am gone but also help with time management, menu planning and life in general.
Usually I work with my clients in their homes, but also do virtual organizing for those in other countries or cities they send photos, we discuss ( either by phone, skype or email ) ways to fix the issues, set time frames and goals and then work together with accountability systems to ensure they happen.
It is a lot of fun and very rewarding when families were overwhelmed with stuff find freedom from the burden of their belongings..
If you are interested – here is a link to tv interview I did with one of my clients for the CBC news.