You may make fund switches online or by submitting a transaction request form to AIA. This form is available here. The minimum amount per fund switch is S$100. There is no limitation on the number of fund switches. If it is a SRS policy, any fund you switch into must be approved under the SRS.
AIA reserves the right to revise any minimum fund switch amount imposed and to terminate or suspend this fund switch facility. AIA reserves the right to place limits on the number of fund switches carried out under the policy or impose any other terms and conditions relating to this facility. AIA shall not be responsible for any loss or damages arising from or attributable to the exercise of its rights reserved above. All subscriptions for units in a fund, including switches, are subject to the approval of the fund or its manager.