Once you have made a template, you can use it in any campaign.
Go to Marketing in the left hand menu -> Click SMS Templates
Under My Templates, click New
Fill in the title of your template ie 'Team member holiday notification'
Fill in the description of your template ie 'Message to send clients to let them know about upcoming team holiday'
Fill in the content of your message. You can use the personalisation drop down to fill in details like clients' names, salon social details, or booking details. You have a character counter in the bottom right to tell you how many credits the template would be.