In Windows OS root certificates are installed automatically upon NCALayer launch and become available for the above browsers.
In Mac OS X installation is also performed automatically, though you need to configure trust.
To import root certificates to Linux OS, in Chrome menu open "Settings". Click «Additional". In "Confidentiality and Security" category click "Configure certificates. Settings and HTTPS/SSL Certificates Management". In the panel that opens, click "Certification Authorities" tab. Click "Import" and indicate the RCA certificate: НЕГІЗГІ КУӘЛАНДЫРУШЫ ОРТАЛЫҚ (RSA). Then, tick the box “Trust upon identification of websites” and click "OK".