https://hive.blog/hive-174578/@pitboy/dayanuul
https://www.waivio.com/@hiveph/power-up-what-why-and-how
Hello. You can find the answer to your question from the links above. The general operation is the same for Hive-engine tokens. You can power up Cent etc. tokens using the websites below. You can also make purchase/sale transactions.
https://peakd.com/@accountname/wallet/hive-engine
https://tribaldex.com/
https://hive-engine.com/