available for use as you prefer / sb prefers :
He will have a car at his disposal for the whole month.
Well, I'm at your disposal (= I am ready to help you in any way I can) .
available for use as you prefer / sb prefers :
He will have a car at his disposal for the whole month.
Well, I'm at your disposal (= I am ready to help you in any way I can) .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005