Maurice McCabe has been granted full legal representation for the duration of the Tribunal into his alleged smearing.
But the Tribunal has deferred a decision about whether to stop the current and previous Garda Commissioners from sharing the same lawyer.
Both Commissioners have also been granted the right to have a lawyer present for the whole Tribunal.
Mr McCabe's counsel will be present for all hearings, except for those relating to the treatment of a separate whistleblower, Keith Harrison.