Generate a joining letter for {employee_name} who has been selected for the position of {designation} at {app_name}. Customize the letter by filling in the appropriate details and placeholders enclosed in {}. Please structure the letter to include the mentioned Variables:{date},{employee_name}{address},{designation},{start_date},{branch},{start_time},{end_time}, {total_hours} in their respective sections. Sign off the letter with the company name and the date. alse add subject ,company conditions for ##conditions##