English to Spanish Law/Patents Insurance arbitration clause

The arbitration tribunal shall have power to fix all procedural rules for the holding of the arbitration including discretionary power to make orders as to any matters which it may consider proper in the circumstances of the case with regard to pleadings, discovery, inspection of the documents, examination of witnesses and any other matter whatsoever relating to the conduct of the arbitration and may receive and act upon such evidence whether oral or written strictly admissible or not as it shall in its discretion think fit.

Entiendo que la idea es "según (el tribunal) lo considere pertinenente" pero no es la traducción exacta. Tal vez ya existe una fórmula o una frase equivalente.
Muchas gracias por sus sugerencias!