For your information, Primary/Secondary/SPED/MOE Kindergarten uniforms, as well as PCF Sparkletots uniforms are using different client platforms. Therefore, you will not be able to merge/ combine them into a single order for processing.
It is also not permissible to instruct any uniforms of your elder child schooling at a Primary/Secondary/SPED/MOE Kindergarten uniforms to be delivered to your younger child's PCF Centre.