After you create a join token, you can modify only the tags associated with it; you cannot modify its name or description.
To edit a join token, do the following:
Log in to the Cloud Services Portal.
Go to the Manage > Infrastructure > Join Tokens tab.
On the Join Tokens page, select the checkbox of the join token you want to configure, and then click Edit.
In the Edit <Join Token> dialog, edit the tags you have configured. For details, see Managing Tags.