EUSG
European Sustainable Growth Acquisition Corp. Class A
stock NASDAQ

When and if you are able to redeem, you usually have to call your broker and direct them to submit your shares for redemption.
The proxies for an extension vote or business combination vote usually have a statement similar to this one ( from the EUSG proxy ):
"PUBLIC SHAREHOLDERS ARE NOT REQUIRED TO AFFIRMATIVELY VOTE FOR OR AGAINST THE BUSINESS COMBINATION PROPOSAL OR AT ALL OR TO BE A HOLDER OF RECORD ON THE RECORD DATE IN ORDER TO HAVE THEIR SHARES REDEEMED FOR CASH. ANY PUBLIC SHAREHOLDER HOLDING EUSG CLASS A ORDINARY SHARES MAY EXERCISE REDEMPTION RIGHTS REGARDLESS OF WHETHER THEY VOTE ON THE BUSINESS COMBINATION PROPOSAL OR IF THEY ARE A HOLDER OF RECORD ON THE RECORD DATE. **TO EXERCISE REDEMPTION RIGHTS, HOLDERS MUST TENDER THEIR SHARES TO CONTINENTAL STOCK TRANSFER & TRUST COMPANY, EUSG’s TRANSFER AGENT, NO LATER THAN TWO BUSINESS DAYS PRIOR TO THE EXTRAORDINARY GENERAL MEETING. YOU MAY TENDER YOUR SHARES BY EITHER DELIVERING YOUR SHARE CERTIFICATE(S) TO CONTINENTAL STOCK TRANSFER & TRUST COMPANY OR BY DELIVERING YOUR SHARES ELECTRONICALLY USING CONTINENTAL STOCK TRANSFER & TRUST COMPANY’S DWAC (DEPOSIT WITHDRAWAL AT CUSTODIAN) SYSTEM.** "
Basically, you call your broker, the broker delivers the shares electronically to the transfer agent.
ZNTE should either hold an extension vote or a business combination vote by May 19, 2022; or else they will wind up operations and return the pro-rata share amount to common stockholders ( in which case warrants would expire worthless ).
Until then, the shares cannot be redeemed.