Org Unit Proximity Adjustment documentation

Signed-off-by: akilsdonk <akilsdonk@esilibrary.com>
Updated root

Signed-off-by: Angela Kilsdonk <akilsdonk@esilibrary.com>
Documentation for Best Hold Selection Sort Order

Signed-off-by: Angela Kilsdonk <akilsdonk@esilibrary.com>