A request for approval letter is when you ask a supervisor, manager or other relevant party for their approval before continuing with a task or project. Please submit an Academic Training (J-1) request in the ISSO Portal.Writing a professional clerical cover letter? Use our free cover letter sample and templates to get you started on your job search. Our Clerk Cover Letter Guide will provide you with all the resources and tips you need to create a successful cover letter that will help you land the job. You want to highlight your interests, skills and experience that most closely match the requirements of the position and the employer. The letter should capture the employer's attention, show why you are writing, indicate why your employment will benefit the company, and ask for an interview. Your cover letter should.