“15 EARLY PENSIONS ON INCAPACITY 15.1 Application of this rule This rule applies to a member who satisfies all of the following conditions: 15.1.1 Service The member has either: (a) completed 2 years’ activemembership; … 15.1.2 Employer agrees incapacity In the employer’s opinion the member is suffering from incapacity at the date of the relevant cessation of eligible employment. 15.1.3 Trustee company agrees incapacity type The trustee company determines that the member is suffering from total incapacity or partial incapacity. 15.1.4 Reason for retirement or cessation of eligible employment The trustee company determines that the member has retired or ceased one or more eligible employments on the grounds of total incapacity or partial incapacity before normal pension age and, in the case of total incapacity, without continuing in any other eligible employment. 15.1.5 Application to the trustee company The member applies to the trustee company, in a form acceptable to the trustee company for benefits under this rule, unless the trustee company determines that regulation 8(3) of the Preservation Regulations is satisfied. … 15.14 Determinations by the trustee company under this rule Any determination made by the trustee company under this rule 15 shall be made on the balance of probabilities, having regard to a medical opinion”