Welche Bedeutung steckt hinter der hier vorgestellten Vokabel aus dem Bereich Chatting with colleagues?

Rachel: 'While you're in Munich, would you like to come to our company tennis tournament? Two of the colleagues in our department are playing in the doubles and we need to drum up some support for them.' Sam: 'Sure! Sounds good.'

to drum up

Do you know what it means?

• to dispose of
• to lose
• to create