TrMenu

Plugin download

https://www.spigotmc.org/resources/trmenu-premium-modern-advanced-menu-plugin-1-8-1-16.83120/www.spigotmc.org

How to use ItemsAdder items in the GUIs

材质TrMenu

material: 'source:ITEMADDER:itemId'
material: 'source:IA:anotherItemId'

How to retexture the GUI background

Title: '%img_offset_-16%%img_blank_menu%'

PlaceholderAPI is required!

Basically %img_offset_-16% is used to shift back the texture %img_blank_menu%by 16 pixels.

Read more here:

PAPI placeholders