Student dependent extension for study permit

[VERNALN]

I have 2 children who have study permits and they are 20 and 19 years old. They are going to apply for study permit extension but I am confused what to write in their imm5709e Details of Intended Study in Canada. Under the ‘cost of my studies’, I am not paying because they are in Yorkdale Adult Learning School which is free of charge. What will i put under cost and funds available ? Under ‘b) My expenses in Canada will be paid by’, if I click ‘Others’ , what shall I write in ‘c) Others’ ? Thanks for the immediate reply.