Unfortunately, I don't think you can have just the "button" Object itself act as your verb (doing the action you want from just clicking on it), save for any fancy coding methods that are way beyond my noob knowledge, lol. Either, you'll just have to be content with an "Explore" button (Object) -> and then clicking on the -> "Explore" button (Verb), or you can just work with the hyperlinks (the blue text) in the big text box in the middle, and not use the right panes~boxes at all. I'm sure I saw this being posted about on how to do it somewhere on here, lol.
Though, with some creativity, it's actually not bad to have an "button" Object with multiple "choice button" Verbs, as this allows you to group stuff, for examples:
Object: "equipment" button
Verbs: "equip", "unequip", "unequip_all", "imbue", "enchant", "remove_curse", "view_equipment", "put_equipment_in_storage", "get_equipment_from_storage", and etc etc etc
Object: "diplomacy" button
Verbs: "ask_about", "socialize", "insult", "intimidate", "threaten", "bribe", "blackmail", "flatter", "fluant", "flirt", "joke", "tease", "haggle_price", "barter", "buy", "sell", "taunt", "lookat", "steal", "lie", "trick", "plant_something_on_the_npc", etc etc etc...
have the "button" Object be a broader category, and then use the "button" Verbs as your specific action choices that all fall within that broader category.