I have PRINCE 2 Foundation Project Management qualification in addition to a Masters Degree in Business Administration (MBA) from the University of Birmingham. I believe the knowledge I have acquired through these qualifications are what you are looking for.
I have demonstrated my ability to plan and prioritise heavy workload and multiple projects. One Monday morning at work my boss came in and asked me to do a number of things for him, which had to be done by 2pm the same day. I had to do 60 invoices, write up agenda for meeting and a number of other tasks. I first tend to create a to-do list on my computer using the task bar in Microsoft Outlook and for each task, I set a deadline. This way things do not get overlooked during the course of the day and help me manage my time effectively. With my to- do list, I worked out what order to do the tasks by thinking about which tasks are urgent and how important each task is. I used my time management skills to establish roughly the estimated time each task would take. By doing this I was able to complete all the tasks without missing the deadline.
I pay thorough attention to details, this was evident in my MBA thesis which was written in a well organised format with no error noted. Furthermore, I think my previous managers can attest to my strict attention to details.
My previous job role was a project coordinator for NICE in the UK and this very similar to what you are looking for.
I am open for further discussion.