This is the 3940th most frequent Arabic word.
بالمؤسسة
"بالمؤسسة" means "in the institution" or "at the institution" in English.
In this sentence, 'بالمؤسسة' refers to a location (institution) where someone's activity, in this case working, takes place.
يعمل أبي بالمؤسسة التي ترعى الأيتام.
My father works at the institution that cares for orphans.
Here, 'بالمؤسسة' describes a relation or association to the governmental institution and specifies where the training is connected to.
تلقيت تدريبًا خاصًا بالمؤسسة الحكومية.
I received specific training related to the governmental institution.
In this context, 'بالمؤسسة' denotes the subject that is performing the actions of collaboration.