I am very confused by the instructions for setting up I want to start with an activity stream but I don't understand how to modify the code where it says com_mycomponent do I create a folder that says com_Activity? or leave it as it is?

Do I need to create database tables for that activities?

Do I have to alter this code to set up the activity stream? if so what should it be?

<?xml version="1.0" encoding="UTF-8"?>
<sociable>
<activity_rule>
<name>com_mycomponent.user.posted</name>
<asset_name>com_mycomponent</asset_name>
<title>User Posted a Message</title>
<description>This activity represents when a user posts a message.</description>
<ui_layout>activity.layouts.post</ui_layout>
<state>1</state>
<access>1</access>
<language>*</language>
</activity_rule>
</sociable>

This all seems more complicated than it should be, I don't understand why these files are not already in the sociable component