If you have a .p12 or .jks you can reference that trust store in a custom connection URL. If you have .pem or .cert you can import those into QIE and then export them combined into a .p12 or .jks
You will need to check the box to "Manually set the connection URL"
jdbc:mysql://172.24.0.5:3306/myDB?sslMode=REQUIRED&clientCertificateKeyStoreUrl=file:c:/cert/appserver.jks&clientCertificateKeyStoreType=jks&clientCertificateKeyStorePassword=changeit
