Setup Login as admin Create a new course Group mode: Visible groups Force group mode: No With group/grouping availability enabled Navigate to test course Press Add an activity or resource > Forum Expand Common module settings section Confirm Add group/grouping access restriction button is present Enter some text in the Forum name field Hit return Confirm form submits Confirm forum isn't created with Restricted Not available unless: You belong to any group restriction With group/grouping availability disabled Navigate to Plugins > Availability restrictions > Manage restrictions in site administration Disable the following (click the eye icon) Restriction by group Restriction by grouping Navigate to test course Press Add an activity or resource > Forum Expand Common module settings section Confirm Add group/grouping access restriction button is not present Enter some text in the Forum name field Hit return Confirm form submits without validation error about Missing restriction plugin