The Nethermind Launcher will present several options on start. Use arrow keys to select options. See here for available CLI methods - CLI supports javascript.
When you start the Launcher choose the following options to sync a node:
Start Nethermind: Node
Select network: Poacore
Select sync: Fast sync
Instructions for Cloud installation are available here. Follow the instructions, and select Poacore as the network.
RocksDB library does not always load properly on macOS. One (hacky) workaround is to install the latest version of RocksDB by running brew install rocksdb. For the time being it should not cause much trouble but the future RocksDB versions may be incompatible. See other Known Issues here.