1. Go to Sales > Orders > Customers

2. Select the customer you need to log notes and add attachments

3. Click on Log Note and type the click on Log

4. Click on the paperclip icon to add attachments

You can also watch these videos for reference: 

https://somup.com/c0eUnRyWVt

https://waoconnect.screencasthost.com/watch/c0VI1hVwyZv

5. Click on Activities to schedule an activity

6. Fill in the detail and click on Schedule

You can also watch this video for reference: https://waoconnect.screencasthost.com/watch/c0VI1DVwyT4

7. Click on Follow/Unfollow

 You can also watch this video for reference: https://waoconnect.screencasthost.com/watch/c0VIinVwywD