Many of the personal view configurations are done through the Settings tab within the Toolbox. Some options are only available for Advanced User with Super User rights, like creating new Booking Customs etc. Some options affect globally like the Server Setup section in the Toolbox, or any place where there is a Server Setup option like e.g. in setting up new Booking Customs.
Use the selector bar at the bottom of the Toolbox to access the different settings. Or select All in the selector bar and use the search field to search for a specific setting.
Depending on the Permissions assigned to a User, some Users might not see the Settings tab. Advanced Users with Super User rights can hide some of these Toolbox tabs or sort them differently through the Toolbox Menus button in the Miscellaneous part of the Toolbox.