diff --git a/atst/routes/applications/new.py b/atst/routes/applications/new.py
index d3911b84..af5a59f1 100644
--- a/atst/routes/applications/new.py
+++ b/atst/routes/applications/new.py
@@ -7,7 +7,11 @@ from atst.forms.application import NameAndDescriptionForm, EnvironmentsForm
 from atst.domain.authz.decorator import user_can_access_decorator as user_can
 from atst.models.permissions import Permissions
 from atst.utils.flash import formatted_flash as flash
-from atst.routes.applications.settings import get_members_data, get_new_member_form
+from atst.routes.applications.settings import (
+    get_members_data,
+    get_new_member_form,
+    handle_create_member,
+)
 
 
 def get_new_application_form(form_data, form_class, application_id=None):
@@ -147,3 +151,16 @@ def view_new_application_step_3(application_id):
         members=members,
         new_member_form=new_member_form,
     )
+
+
+@applications_bp.route("/applications/<application_id>/step_3", methods=["POST"])
+@user_can(Permissions.CREATE_APPLICATION, message="view create new application form")
+def update_new_application_step_3(application_id):
+
+    handle_create_member(application_id, http_request)
+
+    return redirect(
+        url_for(
+            "applications.view_new_application_step_3", application_id=application_id
+        )
+    )
diff --git a/atst/routes/applications/settings.py b/atst/routes/applications/settings.py
index f08f4dd8..29efb1de 100644
--- a/atst/routes/applications/settings.py
+++ b/atst/routes/applications/settings.py
@@ -154,9 +154,9 @@ def send_application_invitation(invitee_email, inviter_name, token):
     )
 
 
-def handle_create_member(application_id, http_request):
+def handle_create_member(application_id, form_data):
     application = Applications.get(application_id)
-    form = NewMemberForm(http_request.form)
+    form = NewMemberForm(form_data)
 
     if form.validate():
         try:
@@ -319,7 +319,7 @@ def delete_environment(environment_id):
     Permissions.CREATE_APPLICATION_MEMBER, message="create new application member"
 )
 def create_member(application_id):
-    handle_create_member(application_id, http_request)
+    handle_create_member(application_id, http_request.form)
     return redirect(
         url_for(
             "applications.settings",