None mute sex when active? Everyone clear off (6,5)

I believe the answer is:

exeunt omnes

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'clear off' is the definition.
The definition suggests a singular noun which matches the answer.

'none mute sex when active? everyone' is the wordplay.
'none mute sex' can be anagrammed to 'EXEUNT OMNES'.
However, I'm not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for exeunt omnes that I've seen before include "send everyone away" , "All leave the stage" , "direction in play" , "Stage direction (Latin)" .)

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