When creating a detail drawing for any group the coordinated dimensions begin at the start of the main group part and not the group itself (if the Main part is not the 'first' item on the selected axis)
IS there a way to reassign the origin so the group detail runs from zero onward to the end of the group as opposed to using minus then zero ( see pic) to include additional group parts.
the origin of groups is always the start point of the main part. eventually one can use a manual reference point. Currently its not possible to change that.
Bentley Structural YouTube Channel
Bentley Technical Support
User Success Support - Bentley Systems