Could it be considered to allow a user with the necessary access permissions to select which offices a Category should be made visible to?

In databases where there are multiple offices linked to the same database, it is a common issue to find either:

a) a large number of categories in use as the different offices want/need different categories to be able to group their clients effectively

b) a number 'X' categories that need to be used to keep the total number of categories down (for example, one office will use a category called X-1 to indicate their Bayside Newsletter contacts whilst another office will be using X-1 to indicate their local Charity Event contacts)

Even in databases where the category lists have been kept to a fairly controlled number, there are still many instances where specific offices decide they don't want to be using some of the group's approved categories and have asked if they can be hidden to make it easier to navigate the category list when adding categories to contacts/searching by categories.