This means that also Gentlemen ought to strongly engage (... in solving all problems.)

(I don't think "Herren" has to be translated as "gentlemen", anymore than you have to be one to go to a public toilet.)

For men, too, the motto here is "Roll up your shirtsleeves and join in!"

Hey die Lösung gefällt mir gut, Phillipp!
Were do you got that from? Just practice?