Is there a way to make a team of OpenClaw instances one CEO and many agents

Yes, via multi-agent routing and sub-agents. You can create one coordinator agent and several worker agents with their own workspaces and models.
That said, this is best seen as a fun experiment. It is token heavy and often less efficient than using one bot with separate sessions. The typical model we envision is one bot you talk to, with different sessions for parallel work. That bot can also spawn sub-agents when needed.
Docs: Multi-agent routing, Sub-agents, Agents CLI.