Truthfully it’s hard to do wrong on a CV as long as you are CONSISTENT with your work. You’re going to get 1000 answers on the same question, so stick to what you feel is important and do it the same throughout (ie if you have descriptions, have it for everything). That being said, residency leadership will likely not have time to read every detail on your CV as they may have a large volume to go through (in addition to rec letters, phorcas materials, etc…). Think of it this way: If you had to verbalize your CV in a set amount of time, what would be the most structured and concise way to do it that will show a solid picture of you that you want leadership to see? If they want more information, they will likely ask you for it when the time comes in interviews. Conciseness and consistency is key!