Organisation is a vital skill to have in your personal life and in a job. It can not only mean that you can cope with workloads but can also help you to find information or act on information quickly.
If for example you are in charge or contact customers to arrange them to come in for a dental check-up then you will need to be able to organise your day. It may be that you have a certain number of people that need to be contacted in a different ways. Often dentists will send out letters and then follow it up with a phone call. Making sure that all your letters are done and in the post before it is collected will be vital so making sure you are organised is going to play a big part in your role.
Everyone can be organised, but it can take time to get in to a good routine to allow you to do this. If a method you have is not working, then try something new or speak to your manager or co-workers to see if they have any suggestions.