He may eventually give talks in the Theocratic Ministry School if his doing so would not disturb others.
What a weird clause this is, that they insert liberally throughout their rule book. It basically makes some people live at the mercy of the vindictiveness of anyone who feels "disturbed" about a fellow human being no longer being shamed.
"Oh I'm so disturbed that brother Marc is allowed to give talks when he should be sitting down feeling ashamed of himself and inferior to me."