In order to participate in Marinade's governance and benefit from MNDE's utility, you will need to lock it in Realms to obtain veMNDE. Unlocking your tokens to get back your MNDE will start a 30-day unlock process.
When locking your MNDE, make sure to choose the following settings:
Make sure to set the lockup time and the number of days before confirming the transactions.
Realms offer two options, "Deposit" and "Lock tokens". Make sure to only use "Lock Tokens" as depositing tokens will not give you any voting power in Marinade governance.