The Patron Category privacy setting explains how each option impacts the history that is kept for the patron. The text only refers to checkout history. However, the setting also impacts holds history. The text should be updated. Here is the current text: "Controls how long a patrons checkout history is kept for new patrons of this category. "Never" anonymizes checkouts on return, and "Forever" keeps a patron's checkout history indefinitely. When set to "Default", the amount of history kept is controlled by the cronjob batch_anonymise.pl which should be set up by your system administrator." Updating the the text to include holds, such as "checkout and holds history" would provide clarity.