Within your Aro account click the "Setup" icon
Click "Agencies & Offices" and then edit the relevant agency
Click the SMS tab and then click Register a sender ID
Complete the form
To check progress, click the Reload icon under Actions next to your Sender ID.
Once approved, the Verified checkbox will be ticked.
* Verification can take up to 48 hours after submission.

A Sender ID is simply the name or number that appears as the sender when you send an SMS.
You can use either:
A mobile number (up to 15 digits)
A text name (up to 11 characters)
Note: +614xxxxxxxx and 04xx xxx xxx count as different Sender IDs.
Only the +61 version can receive replies back to your phone.
You’ll need to complete a short online form confirming:
Your sender details
How you collect SMS permissions from your contacts - eg the Subscribe button on your website forms, etc
The types of messages you plan to send
Each form is unique to your account and applies to one Sender ID.
Once approved, your verified Sender ID will automatically be linked to your Arosoftware account.