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Prytanium voting/presence
When creating a prytanium Chair should be able to add the items that are need voting in that prytanium, or mention that only the attendance is measured.
On the page of a prytanium, Chair should be able to open/close the voting
The delegates and envoys of Contact Antennae should be able to vote or indicate their presence
Only 1 delegate/envoy per local is allowed to do this
Chair and JC should be able to see the results of the voting/presence
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