Final answer:
The correct options available when creating a custom show are adding slides, removing slides, and changing the order of slides, as these allow for customization of the slide sequence for different audiences.
Step-by-step explanation:
The options available when making a custom show in presentation software like Microsoft PowerPoint include adding slides, removing slides, and changing the order of slides. It is important to note that changing font on slides is not typically regarded as a function exclusive to the custom show feature, but rather a general editing function applied directly to the slides in the normal slide view. Similarly, while action buttons can be added or removed, this is also generally done in the slide editing mode, not in the custom show setup.
Therefore, the correct option pertaining to a custom show's editing capabilities is (1) adding a slide, removing a slide, and changing the order of slides. This feature is used to create a personalized sequence of slides that can be tailored to a specific audience, without altering the main presentation.