Epic EMR Help Button SSO Integration

My Organization is looking to set up a help button in EPIC EMR to launch into ServiceNow to Create Incidents using values from epic to autofill Incident variables and perform routing to the correct support groups based on their workstation duty and logged in user ect.

One thing I haven't seem to have figured out is how to authenticate into SN through epic through some kind of SSO. Has anyone does this previously?

Any insight onto how this is achieved would be great thanks!