Ann: December 2022 Quarter Production Update, page-17

You can go over with Creep. I can't tell you the exact numbers involved sorry spec but Creep is allowed.

The general Idea is you can hold over 20% if you only add say 1% a quarter.....

Edit: others have answered but here is the definition i found.

Exceptions to the 20% rule

The basic concepts described above effectively force someone who wants to acquire control of a company or managed investment scheme to only do so through one of a limited number of exceptions.

Those exceptions are designed to ensure that the three main principles are followed.

The three most common exceptions to the 20% rule that are relied on by persons who want to acquire control of a company or managed investment scheme are

• an on-market takeover bid;
• an off-market takeover bid; and
• a scheme of arrangement.

In common language, all three of these types of control transactions are described as a 'takeover'.

There are other exceptions to the 20% rule, including target securityholder approval, 'creeping' acquisitions of no more than 3% voting power in a six month period, and acquisitions as a result of rights issues or underwriting arrangements. However, those methods are less effective in reaching 100% ownership.