Steps to send the email notification for the Forms in Microsoft Team only to the owner of that group.

Step 1: Sign in to Forms at https://forms.office.com, and then click Group forms.

Step 2: Click recent group forms.

Step 3: Select your group

Step 4: On the right side, you see the number of members in the group. Click that number, and then it opens the group email page in Outlook.

Step 5: In Outlook, on the right side of the number of members in the upper-right corner, select the ellipsis button (…)

Step 6: Click Edit group.

Step 7: Deselect the Let people outside the organization email the group and Send all group conversations and events to members’ inboxes check boxes.

Step 8: Click Save.

Step 9: Open the Form, click the ellipsis button (…) on the upper-right corner of your screen, select Settings, and then select the Email notification of each response check box.