how validationGroup works.
how it is related to validations
Discussion posts and replies are publicly visible
For what it's worth: because of the way field behave when assigned a validation group (particularly, "required" fields will no longer show the "required" indicator at all after they're given a validation group), I tend to not use this feature under most normal circumstances, and design around it in other ways (using helper text, disabling / enabling buttons, etc).
Same for me.
+1 on tending away from validation groups. It is not a good UX in my opinion if I cannot add an asterisk to a required field when using these, so I stay away..