How to add space between two textviews

Just replace <LinearLayout> </LinearLayout> with <RelativeLayout> </RelativeLayout> then go in graphical layout and adjust space as you like.

You can use android:layout_marginTop="value" like this

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/lbl_group_coworkers"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Coworkers" />

        <TextView 
            android:id="@id/lbl_group_"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:text="Family"/>
    </LinearLayout>

you can have margin between two textview. add top margin to the second textview

like this

 <TextView 
    android:id="@id/lbl_group_"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="20dp"
    android:text="Family"/>