183. Appointment of executor. The appointment of an executor may be express or by necessary implication. 184. Persons to whom probate cannot be granted. Probate shall not be granted to any person who is a minor or is of unsound mind. 185. Grant of probate to several executors. When several executors are appointed, probate may be granted to them all simultaneously, or at different times. 186. Probate of codicil discovered after grant of probate. If a codicil is discovered after the grant of probate, a separate probate of that codicil may be granted to the executor, if it in no way revokes the appointment of executors made by the will; but if different executors are appointed by the codicil, the probate of the will shall be revoked, and a new probate granted of the will and the codicil together. 187. Surviving executor. When probate has been granted to several executors, and one of them dies, the entire representation of the testator accrues to the surviving executor or executors. 188. Right as executor or legatee, when established. No right as executor or legatee shall be established in any court of justice, unless a court of competent jurisdiction within Uganda has granted probate of the will under which the right is claimed, or has granted letters of administration under section 181. 189. Effect of probate. Probate of a will when granted establishes the will from the death of the testator, and renders valid all intermediate acts of the executor, as such.