You can quit your job at Target online through Workday. After logging into your account, you can go into your profile and pick "Job Change" and then "Resign." You should enter your last day at work, which should ideally include a two weeks notice. You should also let your supervisor know that you will be leaving.
There are many reasons why people quit their jobs. Whatever the reason is, it is a good idea to leave your job in the right way and in good standing. In addition to adding your proposed termination date, you can include comments or attach a resignation letter to your request.
If you choose to include a resignation letter with your request, you should address the letter to Human Resources, and it should be polite and professional. Make sure you clearly state what date will be your last and include your reasons for leaving.
If you are leaving for a negative reason, it is better to add something non-committal and polite, for example, that you are leaving to pursue another opportunity. This can leave the door open in case you need to come back or ask for a reference for a future position.
While there isn't a legal obligation to give two weeks' notice when leaving a job, it is usually the polite thing to do. This shows that you can conduct yourself as a professional, and improves your chances of being able to return or receive a recommendation.