One possibility: CORPORATIONS ACT 2001 - SECT 249D Calling of...

One possibility:

CORPORATIONS ACT 2001 - SECT 249D

Calling of general meeting by directors when requested by members mce-anchor
(1)  The directors of a company must call and arrange to hold a general meeting on the request of members with at least 5% of the votes that may be cast at the general meeting.
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(2)  The request must:
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(a)  be in writing; and
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(b)  state any resolution to be proposed at the meeting; and
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(c)  be signed by the members making the request; and
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(d)  be given to the company.
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(3)  Separate copies of a document setting out the request may be used for signing by members if the wording of the request is identical in each copy.
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(4)  The percentage of votes that members have is to be worked out as at the midnight before the request is given to the company.
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(5)  The directors must call the meeting within 21 days after the request is given to the company. The meeting is to be held not later than 2 months after the request is given to the company.