Council clarify who has the authority to change any element of a plan for which planning permission has been given

My first question at yesterdays (15th June) MD meeting, “Can the council clarify who has the authority to change any element of a plan for which planning permission has been given such as the new pedestrian path along the riverside between the Gables and Coxes House (Kilbelin House) included as part of the application for Belin Woods, and on what grounds any deviation from what is
proposed and approved can be made?

Here is the report issued by: Mr M McLoughlin, A/Senior Executive Officer, Planning, Strategic Development and Public Realm : A material change to a planning permission can only be made by means of a further planning permission. In respect of the case cited above, compliance has not been agreed as yet between the Developer and the Planning Authority and will be determined once all completed documentation has been received.