Unfortunately we can't give students access to the IAM console/API for security reasons. If a lab requires certain IAM permissions, then the lab will be created with those permissions already set.
If you'd like to practice the IAM settings, you can sign up for a free tier AWS account. So long as you stick to the free tier activities (like the IAM console) you will not be charged for using AWS. Some of our lab tasks and activities do have you perform tasks outside the free tier so be sure to use the ones provided by Linux Academy for as much as possible.