If you can avoid it, don’t wait until the circumstances demand perfection to try out a new approach, to give staff new roles or to change the system.
When the pressure’s on you need to have confidence on your people, your processes and your systems. If there are any weaknesses you will be found out.
Choose the time to introduce change carefully. Be open about the fact that you’re trying something new, and that you’re taking a risk. Seek feedback and be willing to introduce refinements. Most importantly, allow people to choose if they participate and reward the willing.
Under the right circumstances people are happy to participate in trials and are generally sympathetic; they recognise things can go wrong and are forgiving. However, they are not stupid, and will take offense at unwittingly being treated as guinea pigs.
How much goodwill do you have to play with?