makes minor layout changes

app/src/main/res/drawable/ic_person_add_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M15,12c2.21,0 4,-1.79 4,-4s-1.79,-4 -4,-4 -4,1.79 -4,4 1.79,4 4,4zM6,10L6,7L4,7v3L1,10v2h3v3h2v-3h3v-2L6,10zM15,14c-2.67,0 -8,1.34 -8,4v2h16v-2c0,-2.66 -5.33,-4 -8,-4z"/>
+</vector>

app/src/main/res/layout/activity_create_new_channel.xml

@@ -25,8 +25,8 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginEnd="16dp"
-            android:background="?selectableItemBackground"
             android:alpha="0.7"
+            android:background="?selectableItemBackground"
             android:enabled="false"
             android:gravity="end"
             android:text="@string/create_new_channel_action"
@@ -95,12 +95,13 @@
             android:id="@+id/channel_description"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
             android:text="@string/private_channel_type_description"
             android:textColor="@color/black"
             app:layout_constraintTop_toBottomOf="@id/channel_type" />
 
         <View
-            android:id="@+id/separator"
+            android:id="@+id/separator_1"
             android:layout_width="0dp"
             android:layout_height="0.2dp"
             android:layout_marginTop="8dp"
@@ -128,12 +129,59 @@
             android:hint="@string/new_channel_edit_text_hint"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toEndOf="@id/placeholder"
-            app:layout_constraintTop_toBottomOf="@id/separator">
+            app:layout_constraintTop_toBottomOf="@id/separator_1">
 
             <android.support.design.widget.TextInputEditText
                 android:id="@+id/channel_name_edit_text"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent" />
         </android.support.design.widget.TextInputLayout>
+
+        <View
+            android:id="@+id/separator_2"
+            android:layout_width="0dp"
+            android:layout_height="0.2dp"
+            android:layout_marginTop="8dp"
+            android:background="@color/colorDividerMessageComposer"
+            app:layout_constraintTop_toBottomOf="@id/channel_name_text_input_layout" />
+
+        <android.support.constraint.ConstraintLayout
+            android:id="@+id/add_members_view"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:background="?attr/selectableItemBackground"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/separator_2">
+
+            <TextView
+                android:id="@+id/add_members_text"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:text="@string/add_members_helper_text"
+                android:textColor="@color/black"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintHorizontal_chainStyle="spread"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent" />
+
+            <ImageView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:src="@drawable/ic_person_add_black_24dp"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintHorizontal_bias="1"
+                app:layout_constraintStart_toEndOf="@id/add_members_text" />
+        </android.support.constraint.ConstraintLayout>
+
+        <View
+            android:id="@+id/separator_3"
+            android:layout_width="0dp"
+            android:layout_height="0.2dp"
+            android:layout_marginTop="8dp"
+            android:background="@color/colorDividerMessageComposer"
+            app:layout_constraintTop_toBottomOf="@id/add_members_view" />
+
     </android.support.constraint.ConstraintLayout>
 </android.support.constraint.ConstraintLayout>
\ No newline at end of file

app/src/main/res/values/strings.xml

@@ -73,6 +73,7 @@
     <string name="public_channel_description">Visible to everyone</string>
     <string name="new_channel_edit_text_hint">Channel Name</string>
     <string name="create_new_channel_action">CREATE</string>
+    <string name="add_members_helper_text">Add Members</string>
 
     <!-- System messages -->
     <string name="message_room_name_changed">Room name changed to: %1$s by %2$s</string>