If you want all group members to submit then you must set the box higher up "Require students click submit button" to Yes as in the FAQ documentation here (direct link) You want students to submit work in groups
Assignment
problem in assignment settings
اس بحث کو بند کر دیا گیا ہے لہذا آپ اس کا مزید جواب نہیں دے سکتے۔