If you live in Rwanda and want to apply for an airport transit visa for the Netherlands, you cannot do this at the Netherlands embassy in Kigali. You can apply for this type of visa at the Belgian external service provider TLScontact in Kigali.
The Belgian embassy in Kigali has appointed TLScontact as the outsourced partner to handle the visa applications for the Netherlands and the 18 represented Schengen countries. You can make an appointment for this visa at the Belgian external service provider TLScontact in Kigali.
In case you have a question, you can send an email via the contact form.