diff --git a/jsapp/js/account/accountSidebar.module.scss b/jsapp/js/account/accountSidebar.module.scss
index b068805e9c..8cc4432d30 100644
--- a/jsapp/js/account/accountSidebar.module.scss
+++ b/jsapp/js/account/accountSidebar.module.scss
@@ -33,7 +33,7 @@
   color: inherit;
   padding: 0 0 0 18px !important;
   border-left: 3px solid transparent;
-  margin-bottom: 18px;
+  margin-bottom: 16px;
   cursor: pointer;
 
   .newLinkLabelText {
@@ -59,7 +59,7 @@
 }
 
 .subhead {
-  padding: 0 0 0 18px !important;
+  padding: 0 0 0 20px !important;
   margin-bottom: 16px;
   font-size: 12px;
   font-weight: 600;
diff --git a/jsapp/js/account/accountSidebar.tsx b/jsapp/js/account/accountSidebar.tsx
index 41aa3a54ba..1966d65fee 100644
--- a/jsapp/js/account/accountSidebar.tsx
+++ b/jsapp/js/account/accountSidebar.tsx
@@ -1,4 +1,4 @@
-import React, {useContext, useMemo, useState} from 'react';
+import React, {useMemo, useState} from 'react';
 import {NavLink} from 'react-router-dom';
 import {observer} from 'mobx-react-lite';
 import styles from './accountSidebar.module.scss';
@@ -7,9 +7,14 @@ import Icon from 'js/components/common/icon';
 import type {IconName} from 'jsapp/fonts/k-icons';
 import Badge from '../components/common/badge';
 import subscriptionStore from 'js/account/subscriptionStore';
+import envStore from 'js/envStore';
 import useWhenStripeIsEnabled from 'js/hooks/useWhenStripeIsEnabled.hook';
 import {ACCOUNT_ROUTES} from 'js/account/routes.constants';
 import {useOrganizationQuery} from './stripe.api';
+import {OrganizationUserRole} from './stripe.types';
+import {useFeatureFlag, FeatureFlag} from 'js/featureFlags';
+import {getSimpleMMOLabel} from './organizations/organizations.utils';
+import LoadingSpinner from 'js/components/common/loadingSpinner';
 
 interface AccountNavLinkProps {
   iconName: IconName;
@@ -36,56 +41,168 @@ function AccountNavLink(props: AccountNavLinkProps) {
   );
 }
 
-function AccountSidebar() {
-  const [showPlans, setShowPlans] = useState(false);
-
-  const orgQuery = useOrganizationQuery();
+// TODO: When we no longer hide the MMO sidebar behind a feature flag,
+// the check for org ownership can be removed as it will be logically entailed
+// by the org being single-user.
+function renderSingleUserOrgSidebar(
+  isStripeEnabled: boolean,
+  showAddOnsLink: boolean,
+  isOwner: boolean
+) {
+  return (
+    <nav className={styles.accountSidebar}>
+      <div className={styles.navGroup}>
+        <AccountNavLink
+          iconName='user'
+          name={t('Profile')}
+          to={ACCOUNT_ROUTES.ACCOUNT_SETTINGS}
+        />
+        <AccountNavLink
+          iconName='lock-alt'
+          name={t('Security')}
+          to={ACCOUNT_ROUTES.SECURITY}
+        />
+        {isOwner && (
+          <>
+            <AccountNavLink
+              iconName='reports'
+              name={t('Usage')}
+              to={ACCOUNT_ROUTES.USAGE}
+            />
+            {isStripeEnabled && (
+              <>
+                <AccountNavLink
+                  iconName='editor'
+                  name={t('Plans')}
+                  to={ACCOUNT_ROUTES.PLAN}
+                />
+                {showAddOnsLink && (
+                  <AccountNavLink
+                    iconName='plus'
+                    name={t('Add-ons')}
+                    to={ACCOUNT_ROUTES.ADD_ONS}
+                    isNew
+                  />
+                )}
+              </>
+            )}
+          </>
+        )}
+      </div>
+    </nav>
+  );
+}
 
-  useWhenStripeIsEnabled(() => {
-    if (!subscriptionStore.isInitialised) {
-      subscriptionStore.fetchSubscriptionInfo();
-    }
-    setShowPlans(true);
-  }, [subscriptionStore.isInitialised]);
+function renderMmoSidebar(
+  userRole: OrganizationUserRole,
+  isStripeEnabled: boolean,
+  showAddOnsLink: boolean,
+  mmoLabel: string
+) {
+  const showBillingRoutes =
+    userRole === OrganizationUserRole.owner && isStripeEnabled;
+  const hasAdminPrivileges = [
+    OrganizationUserRole.admin,
+    OrganizationUserRole.owner,
+  ].includes(userRole);
 
   return (
     <nav className={styles.accountSidebar}>
-      <AccountNavLink
-        iconName='user'
-        name={t('Profile')}
-        to={ACCOUNT_ROUTES.ACCOUNT_SETTINGS}
-      />
-      <AccountNavLink
-        iconName='lock-alt'
-        name={t('Security')}
-        to={ACCOUNT_ROUTES.SECURITY}
-      />
-      {orgQuery.data?.is_owner && (
-        <>
+      <div className={styles.subhead}>{t('ACCOUNT')}</div>
+      <div className={styles.navGroup}>
+        <AccountNavLink
+          iconName='user'
+          name={t('Profile')}
+          to={ACCOUNT_ROUTES.ACCOUNT_SETTINGS}
+        />
+        <AccountNavLink
+          iconName='lock-alt'
+          name={t('Security')}
+          to={ACCOUNT_ROUTES.SECURITY}
+        />
+      </div>
+      <div className={styles.navGroup}>
+        <div className={styles.subhead}>{mmoLabel.toUpperCase()}</div>
+        <AccountNavLink
+          iconName='users'
+          name={t('Members')}
+          to={ACCOUNT_ROUTES.ORGANIZATION_MEMBERS}
+        />
+        {hasAdminPrivileges && (
           <AccountNavLink
             iconName='reports'
             name={t('Usage')}
             to={ACCOUNT_ROUTES.USAGE}
           />
-          {showPlans && (
-            <>
-              <AccountNavLink
-                iconName='editor'
-                name={t('Plans')}
-                to={ACCOUNT_ROUTES.PLAN}
-              />
+        )}
+        {showBillingRoutes && (
+          <>
+            <AccountNavLink
+              iconName='editor'
+              name={t('Plans')}
+              to={ACCOUNT_ROUTES.PLAN}
+            />
+            {showAddOnsLink && (
               <AccountNavLink
                 iconName='plus'
                 name={t('Add-ons')}
                 to={ACCOUNT_ROUTES.ADD_ONS}
                 isNew
               />
-            </>
-          )}
-        </>
-      )}
+            )}
+          </>
+        )}
+        {hasAdminPrivileges && (
+          <AccountNavLink
+            iconName='settings'
+            name={t('Settings')}
+            to={ACCOUNT_ROUTES.ORGANIZATION_SETTINGS}
+          />
+        )}
+      </div>
     </nav>
   );
 }
 
+function AccountSidebar() {
+  const [isStripeEnabled, setIsStripeEnabled] = useState(false);
+  const enableMMORoutes = useFeatureFlag(FeatureFlag.mmosEnabled);
+  const orgQuery = useOrganizationQuery();
+
+  useWhenStripeIsEnabled(() => {
+    if (!subscriptionStore.isInitialised) {
+      subscriptionStore.fetchSubscriptionInfo();
+    }
+    setIsStripeEnabled(true);
+  }, [subscriptionStore.isInitialised]);
+
+  const showAddOnsLink = useMemo(() => {
+    return !subscriptionStore.planResponse.length;
+  }, [subscriptionStore.isInitialised]);
+
+  const mmoLabel = getSimpleMMOLabel(
+    envStore.data,
+    subscriptionStore.activeSubscriptions[0]
+  );
+
+  if (!orgQuery.data) {
+    return <LoadingSpinner />;
+  }
+
+  if (orgQuery.data.is_mmo && enableMMORoutes) {
+    return renderMmoSidebar(
+      orgQuery.data?.request_user_role,
+      isStripeEnabled,
+      showAddOnsLink,
+      mmoLabel
+    );
+  }
+
+  return renderSingleUserOrgSidebar(
+    isStripeEnabled,
+    showAddOnsLink,
+    orgQuery.data.is_owner
+  );
+}
+
 export default observer(AccountSidebar);
diff --git a/jsapp/svg-icons/users.svg b/jsapp/svg-icons/users.svg
new file mode 100644
index 0000000000..86cac0349c
--- /dev/null
+++ b/jsapp/svg-icons/users.svg
@@ -0,0 +1,6 @@
+<svg width="280" height="280" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+<path d="M8.92308 11.1818C11.0472 11.1818 12.7692 9.35026 12.7692 7.09091C12.7692 4.83156 11.0472 3 8.92308 3C6.7989 3 5.07692 4.83156 5.07692 7.09091C5.07692 9.35026 6.7989 11.1818 8.92308 11.1818Z"/>
+<path d="M8.15385 12.8182C4.75517 12.8182 2 16.5669 2 20.1818C2 20.6337 2.3444 21 2.76923 21H15.0769C15.5018 21 15.8462 20.6337 15.8462 20.1818C15.8462 16.5669 13.091 12.8182 9.69231 12.8182H8.15385Z"/>
+<path d="M16.795 16.9091C16.4188 15.8738 15.8774 14.9096 15.2144 14.0826C14.8578 13.6379 14.4578 13.2234 14.0201 12.8548C14.7583 11.9419 15.7637 11.3306 16.8718 11.3306H17.8974C20.1632 11.3306 22 13.8865 22 16.3512C22 16.6593 21.7704 16.9091 21.4872 16.9091H16.795Z"/>
+<path d="M19.9487 7.42562C19.9487 8.96608 18.8007 10.2149 17.3846 10.2149C15.9685 10.2149 14.8205 8.96608 14.8205 7.42562C14.8205 5.88516 15.9685 4.63636 17.3846 4.63636C18.8007 4.63636 19.9487 5.88516 19.9487 7.42562Z"/>
+</svg>