During configuration of your first Simulation Bot you could face the issue that you see the following error message on the COnsole Output of the Bot.

ERROR: sasl_ssl://<server>:29092/bootstrap: Connection to ip4#server.29092 failed: No connection could be made because the target machine actively refused it

The error message is a bit misleading (kafka error message). It is not the OE Appliance which refuses the connection, it is your firewall configuration which does not allow the bot to connect via TCP 29092 to the OE Appliance.
So please make sure that TCP port 29092 and TCP 22181 are open in both direction between your Bot Clients and the OE Appliance