Item Menu Problem

I have a adding a Custom Menu and have Problem finding the Key Item
So this is the Menu:

SceneManager.call(Scene_Item)
SceneManager.call(Scene_Skill)
SceneManager.call(Scene_Equip)
SceneManager.call(Scene_Status)
SceneManager.call(Scene_Save)
SceneManager.call(Scene_End)

But i dont find how to Call the "Key Item" Where my Quest Appear
Someone have idea how to call it?

To know that, we would need to see the script you are using for that custom menu.

Edit:
This is the only new scene call in that script, so I guess, you meant this one?

Yep i want when click the menu icon to open the Key Item Window