Can I control what information a patron can change when they’re logged in to a Patron Status?
Yes, with your Security Group settings you have the ability to control how much information (if any) that your patrons can edit.
Patron Status
Do all users have access to Patron Status and the ability to make holds and reservations?
Any person added to your system will be given access to Patron Status and other patron-facing portions of Alexandria. However, you control if patrons can place holds/reservations, write reviews, and more, by modifying their Security Group (the Account tab).