Here the user has free access to the entire toolbox and free reign as to what to do.
Two glass houses had been constructed in the park, and the designers were given free reign to do what they would with the space.
The state may give you free reign to decide the best course of study for your child or they may set some required classes.
You could also give your youth group free reign to design the set and costumes as they see fit.
Before allowing your child free reign on the internet, you should find out what websites she/he plans to visit.