Hey oieoie
First you got to decide if you want to hold shares in a market that is different to the ASX (in case you already don't). If you do, then the detail of what to do is in the company announcement. You should have received a copy of this already:
https://announcements.asx.com.au/asxpdf/20231115/pdf/05xc96324b1ly6.pdf
You could choose option 3 (aka do nothing), wait for your SEZL DRS certificate to arrive, then link it with Westpac for usd$15, as it seems they are another broker who accept DRS transfers - see link below. You better also check with Westpac and you might need to set up an international account of some sort with them.
https://sharetrading.westpac.com.au/media/166563/westpac_global_markets_user_guide.pdf
