Cipher suits are set in your web server configuration. Certificates pretty much work with any cipher suite, independent of how they were issued or who they’re from.
The details depend on your web server. Apache has a SSLCipherSuite directive for this purpose. Nginx has ssl_ciphers. IIS has some registry settings for this purpose. I’ve also seen this tool mentioned a couple of times related to IIS cipher suite configuration. You might also want to check out the Mozilla SSL Configuration Generator as a good starting point for your cipher suits.