Certainly, you can convert your deposited assets* to any other supported by Aevo directly in your Portfolio section.
Also in the Portfolio section, you can convert your USDCs to aeUSD (subject to availability), Aevo's special currency that serves as 100% collateral and allows you to earn an APY.
For more details: https://docs.aevo.xyz/aevo-exchange/aeusd
(*): weETH is not available for spot conversions