How to upload an self SSL-TLS certificate to ThingWorx


Good morning, gentlemen, my problem is this:

I have one Thing working perfectly via mqqt protocol. I have created a certificate that authenticates between client and server mqtt. What I need to do is have my certificate authenticate between the client and ThingWorx. I’ve checked everywhere possible on the platform but I have not found a specific place to upload my certificate. There is only one option called ‘Application Keys’, but it does not give me the option to use my certificate.
Thanks for the help.