Only reason I can think of for the Tracer Tokens tab not being visible is that the publication in question is not using transactional replication.
If it is a publication using snapshot replication then there will only be the "All Subscriptions", "Agents" & "Warnings" tabs.
If it is a publication using transactional replication then you should see the additional "Tracer Tokens" tab as well as the other 3.