See https://wowpedia.fandom.com/wiki/Addon_compartment and https://warcraft.wiki.gg/wiki/Addon_compartment

Edit: Also requested on WowAce (source).

No issue here, just a big suggestion - it would be wonderful if we could get Addon Compartment compatibility in a future update. Cheers! :)

Roadmap:

• Update TOC to register addon compartment hooks
• Implement the required functions (can just open the existing UI, for now)
• TBD: Should the options also have hooks of their own? (Nope, they're a complimentary addon)
• TBD: Is there a suitable icon that should be assigned? (Yeah, the one used by the default item - Hyacinth Macaw)
• Add an icon for the addon compartment entry
• Test that everything works - manually, since it can't be automated