Thank you very much.
I thought it would be better to include the words needed to set up group submissions in the help text.
Set to yes if you want all group members to submit.
Require students to click the submit button Help
If enabled, students will have to click a Submit button to declare their submission as final. This allows students to keep a draft version of the submission on the system. If this setting is changed from "No" to "Yes" after students have already submitted those submissions will be regarded as final.