Accha ye ECAs 9th class k baad wale lgane h..? Aur CV IIM format wala bnana h ya koi bhi Canva template ...?

CV: Not mandatory. Hence, no guideline about it. However, taking the IIM format is recommended (but be okay with your entire CV being ignored too).

ECAs: Already answered in the interview guide. Please put in the effort to go through it -- it'll help you out a lot!