I agree. You can have the best of both worlds. Tell them they are free to experiment and learn. I'll be here if you need help at any stage. Give them a staging

I agree. You can have the best of both worlds. Tell them they are free to experiment and learn. I'll be here if you need help at any stage. Give them a staging environment to work in so they don't cause any customer issues. There is an organisation issue here too. Why don't they have a buddy if they are junior. I am senior and still have a buddy, mentor and manager. Not having an assigned buddy and a good plan for juniors is bad.