In your webclient view. Click into 'chat' on the left

Click the '+' button

Then select the SMS/Text icon highlighted below.

Add the number you wish to text in the box as shown below and click 'start chat'

make sure the number is in international format so all UK mobiles will be +447 start 

Type in the text box. Press the arrow highlighted to send.

Any replies will land back in this chat setup as a thread of the chat

Any problems please let us know