Hi Danielle,
If you work for a smaller company, then you get to do it all and that can be a lot of fun and present a lot of opportunity for gaining growth experiences.
Every property runs a bit differently, but it sounds like your Office is a little confusing. As a Manager, I would expect to be "in charge" and everyone would report to me (eventually). You should probably ask for some clarification as to what times you need to report directly to the Property Manager. Typically, you should go directly to the Manager to report all Accidents/Incidents, requests from Residents regarding payment plans or deviations to a Lease, and any emergency event (fire, theft, flood, weather or property damage.)
The only time you, as a Leasing Consultant, would go directly to the Assistant Manager (in my experience) is when the Property Manager is not onsite. It would be best though, to have it in writing what your actual duties are and to whom you should report in all instances. In some instances, Leasing Consultants do report to the Assistant Manager when it pertains to leasing duties.