Where the court orders that a deputy, donee or attorney is entitled to remuneration out of P’s estate for discharging his functions as such, the court may make such order as it thinks fit, including an order that:
(a) he be paid a fixed amount;
(b) he be paid at a specified rate, or
(c) the amount of the remuneration should be determined in accordance with the schedule of fees set out in the relevant Court of Protection Practice Direction,
(d) any amount permitted by the court shall constitute a debt due from P’s estate and the court may order a detailed assessment of the remuneration by a Costs Officer.