This is the 14281st most frequent Polish word.
prowadzeniem
"Conducting" or "managing."
Here, 'prowadzeniem' refers to the act of conducting or leading (conducting classes, in this context).
Mam doświadczenie w prowadzeniem zajęć dla dzieci.
I have experience in teaching classes for children.
In this sentence, 'prowadzeniem' refers to managing or conducting a business enterprise.
Zajmuję się prowadzeniem własnej firmy.
I manage running my own company.
Here, 'prowadzeniem' is used to signify the act of executing or conducting a campaign.