Translation: couldn't organise a piss-up in a brewery, etc Looking for a colloquial Chinese translation of the English: Couldn't organise a piss up in a brewery
Wiktionary:

Presents an example of a minimally simple project that the person or group described is presumed unable to accomplish.
couldn't organise a piss-up in a brewery
(UK, Australia, New Zealand, vulgar, slang, idiomatic) Is unable even to organise a project that requires no planning; is incompetent.  [quotations ▼]



Synonyms
couldn't organise a two-ticket raffle
couldn't organise an orgy in a brothel
couldn't organise a bun fight in a bakery
couldn't pour water out of a boot


What phrases are there in Chinese to express this kind of incompetence, i.e.: unable to organize something that doesn't involve any planning?

(Specifically talking about someones organization skills, of course.)
昏庸无能 is very close.
it means:
have no ability to do even a very simple project.
have no management skill to manage a team.