The "Master" thing

The manual calls it "[Load]".
It talks about it on p.31 and 312 of the Eos Operations Manual.
The faders below are for manual cue timing, which is explained on p.259 and p.323-324

I think we have different manuals;
p.31 Tells me Where and what it is used for. (Loading cues
p.312 Refers to a "Cue List already loaded". But elsewhere it is Noted you can't load Cue lists in Element 2 master pair
p.259 Not mentioned
p.323-324 No mention. Just one 1/4 page ending Chap 16 and p 324 is blank between chapters
See my reply to Salazar

I think we have different manuals;
p.31 Tells me Where and what it is used for. (Loading cues
p.312 Refers to a "Cue List already loaded". But elsewhere it is Noted you can't load Cue lists in Element 2 master pair
p.259 Not mentioned
p.323-324 No mention. Just one 1/4 page ending Chap 16 and p 324 is blank between chapters
See my reply to Salazar