To be completed by the original poster:
CMS Version
4.0.7
Player Type
Windows
Player Version
402
Issue
(SAML: add simple group assignments via SSO · Issue #3297 · xibosignage/xibo · GitHub) Goup matching was introduced with this commit, however there is now regex example in the comments for the settings file. Does anyone have an example regex for simple matching. eg
SAML provider groups: DPT1, DPT2
Xibo groups: DPT1, DPT2