Translate the following English sentence to French:
"I insist that you have this checked because it was just during this part-session that a member of our group wanted to add his signature to a motion for a resolution by other groups but first had to obtain written authorisation from the other groups."
Je tiens à ce que vous fassiez examiner cette affaire, car durant cette semaine de session, un de nos collègues a voulu se rallier à une proposition de résolution d' autres groupes et a dû fournir l' accord écrit des autres groupes.