let make it simple i want to my certificate to be signed by CA not self-signed

There is self-signed certificate to catalyst center built in dna used to authenticate sessions (HTTPS)The recommended is to replace the default and use my internal ca authority to add the certificate needed  

someone recommend that i replace the default Catalyst Center Transport Layer Security certificate with a certificate that is signed by my internal certificate authoritydoes anyone know what's credentials needed for the ca server ? 

- What version of Cisco Catalyst Center are you using?2.3.3.7- Is this the on-prem (physical appliance) or the virtual appliance (VM)?on-prem- What browser and version are you currently trying to access the GUI with? chrome , edge , (work in version ...