Can an org be a member of multiple Environment Hubs?

No, an org can be a member of only one Environment Hub at a time. To remove an org from an Environment Hub so you can associate it with a different one:

1. Go to the Environment Hub tab.
2. Find the org, from the drop-down select Remove.
3. Once removed, connect the org to the desired Environment Hub:
   1. In the Environment Hub tab, click Connect Org.
   2. Enter the admin username for the org.
   3. Click Connect Org.
   4. Enter the org’s password, then click Allow to allow the Environment Hub to access org information.