You have seen a course advertised online that you think would help you perform better at work. The course will take place during the week, so you will need to take time off work. Write a letter to your manager. In the letter say what the course is explain why you want to do the course and how it will be beneficial to the company suggest how your work can be covered while you attend the course.

Dear Sir, My name is Rakesh, and I am working as a Product designer in your company. I am writing to have the permission of a course that I came across online last week. The advertisement referred to a course named as Advanced Computer Aided Design. After clicking on the hyperlink, I found all the details of that course. It is a bi-annual course specially run by the experts in Animation field. Fortunately, the internationally acknowledged team is going to take the course classes for this year only. As I am working in the designing field, I am keen to enroll for this course. I think this would be a great opportunity for me and my career. Besides, the company itself will gain human capital by permitting to do so. I will not only get the international training and exposure, but also get the experience which i could share with my other potential colleagues later and thus boost the development. However, the one issue that is arising in accomplishing this objective is the timing of the course. The classes are going to be held in mornings during the weekdays. Therefore, it requires my full presence. For that reason, I need paid leave for six months. During my absence here, Anil will take the charge and perform my duties. I have shared all the professional details with him. In case some problem will arise, I would be available on phone and pay my visit to the office on course holidays. I hope you will cooperate me and allow me to enhancey knowledge through this course. Thanking you for consideration. Yours faithfully, Rakesh.