diff --git a/lumi2/__init__.py b/lumi2/__init__.py
index 46571eb..45338da 100644
--- a/lumi2/__init__.py
+++ b/lumi2/__init__.py
@@ -45,6 +45,5 @@ def create_app(test_config=None):
     app.add_url_rule('/', endpoint='index')
 
     # TODO create OUs
-    # TODO create static files
 
     return app
diff --git a/lumi2/static/js/groupEdit.js b/lumi2/static/js/group_edit.js
similarity index 81%
rename from lumi2/static/js/groupEdit.js
rename to lumi2/static/js/group_edit.js
index ba81020..0ee4afa 100644
--- a/lumi2/static/js/groupEdit.js
+++ b/lumi2/static/js/group_edit.js
@@ -17,6 +17,7 @@ function removeUserFromFormField(username) {
         }
     }
     formField.value = JSON.stringify(newMembersList);
+    adjustLastMemberButtonState();
 };
 
 function addUserToFormField(username) {
@@ -24,6 +25,7 @@ function addUserToFormField(username) {
     let oldMembersList = JSON.parse(formField.value);
     oldMembersList.push(username);
     formField.value = JSON.stringify(oldMembersList);
+    adjustLastMemberButtonState();
 };
 
 class MemberEntry extends AbstractUserEntry {
@@ -68,9 +70,9 @@ function createRemovedMemberRow(username) {
     let newTableDataButton = document.createElement("td");
     let newTableButton = document.createElement("button");
     newTableButton.type = "button";
-    newTableButton.className = "toggleMembershipButton btn btn-outline-light";
+    newTableButton.className = "toggleMembershipButton inProgress btn btn-outline-light";
     newTableButton.disabled = true;
-    newTableButton.textContent = "Being removed...";
+    newTableButton.textContent = "Will be removed";
     newTableDataButton.appendChild(newTableButton);
     newTableRow.appendChild(newTableDataButton);
 };
@@ -101,13 +103,31 @@ function createAddedMemberRow(username) {
     let newTableDataButton = document.createElement("td");
     let newTableButton = document.createElement("button");
     newTableButton.type = "button";
-    newTableButton.className = "toggleMembershipButton btn btn-outline-light";
+    newTableButton.className = "toggleMembershipButton inProgress btn btn-outline-light";
     newTableButton.disabled = true;
-    newTableButton.textContent = "Being added...";
+    newTableButton.textContent = "Will be added";
     newTableDataButton.appendChild(newTableButton);
     newTableRow.appendChild(newTableDataButton);
 };
 
+/**
+ * If there is only one member in the group member table, disables that member's
+ * remove button.
+ * If there is more than one member, activates the removal button.
+ */
+function adjustLastMemberButtonState() {
+    memberRows = membersTable.querySelectorAll(".userEntry");
+    if (memberRows.length == 1) {
+        memberRows[0].querySelector(".toggleMembershipButton").disabled = true;
+    } else {
+        for (let button of membersTable.querySelectorAll(".toggleMembershipButton")) {
+            if (!button.className.includes("inProgress")) {
+                button.disabled = false;
+            }
+        }
+    }
+}
+
 const membersTable = document.getElementById("groupMembers");
 const nonMembersTable = document.getElementById("groupNonMembers");
 let memberEntries = new Set();
@@ -120,3 +140,4 @@ for (let userEntry of document.body.querySelectorAll(".userEntry")) {
         nonMemberEntries.add(new NonMemberEntry(userEntry.id, userEntry));
     }
 }
+adjustLastMemberButtonState();
diff --git a/lumi2/templates/usermanager/group_edit.html b/lumi2/templates/usermanager/group_edit.html
index 564f9fd..2d4e826 100644
--- a/lumi2/templates/usermanager/group_edit.html
+++ b/lumi2/templates/usermanager/group_edit.html
@@ -4,6 +4,8 @@
 <div class="row">
     <div class="col">
         <h1>Editing group: {{ groupname }}</h1>
+        <p class="text-muted">Add or remove members from <i>{{ groupname }}</i> here. Hit the <kbd>Apply</kbd> button to save your changes.</p>
+        <p class="text-muted">Note that Groups must always have at least one member.</p>
     </div>
 </div>
 <div class="row">
@@ -80,5 +82,5 @@
         </form>
     </div>
 </div>
-<script src="{{ url_for('static', filename='js/groupEdit.js') }}"></script>
+<script src="{{ url_for('static', filename='js/group_edit.js') }}"></script>
 {% endblock content %}
diff --git a/lumi2/usermanager.py b/lumi2/usermanager.py
index d235916..c039c92 100644
--- a/lumi2/usermanager.py
+++ b/lumi2/usermanager.py
@@ -23,6 +23,16 @@ from lumi2.exceptions import InvalidStringFormatException, InvalidImageException
 bp = Blueprint('usermanager', __name__)
 
 
+@bp.before_app_first_request
+def _init_static_images():
+    conn = ldap.get_connection()
+    users = ldap.get_users(conn)
+    conn.unbind()
+    for user in users:
+        user._generate_static_images()
+    
+
+
 @bp.route('/')
 def index():
     """Home page view."""