Rule 33-8 Local Rules
a. Policy
The Committee may establish Local Rules for local abnormal conditions if they are consistent with the policy set forth in Appendix I.
b. Waiving or Modifying a Rule
A Rule of Golf must not be waived by a Local Rule. However, if a Committee considers that local abnormal conditions interfere with the proper playing of the game to the extent that it is necessary to make a Local Rule that modifies the Rules of Golf, the Local Rule must be authorised by the R&A.

Appendix 1
Part A - Local Rules
As provided in Rule 33-8a, the Committee may make and publish Local Rules for local abnormal conditions if they are consistent with the policy established in this Appendix. In addition, detailed information regarding acceptable and prohibited Local Rules is provided in "Decisions on the Rules of Golf" under Rule 33-8 and in "Guidance on Running a Competition".
If local abnormal conditions interfere with the proper playing of the game and the Committee considers it necessary to modify a Rule of Golf, authorisation from the R&A must be obtained.