Sign Customiser allows you to change the default text alignment presented on the visualiser for user-input text inputs. You can show or hide all the text alignment options the user can select.
How to show all the text alignment options
Navigate to the admin of Sign Customiser on your store.
Click on "Customisers" in the home page menu
Click on the customiser you wish to edit
Click on "General Settings" in the left-hand side menu
Scroll down until you see the title for option "Text Alignment"
Make sure "Display Alignment Options" are selected and hit save at the bottom of the form
How to hide all text alignment options and default to one text alignment option
Navigate to the admin of Sign Customiser on your store.
Click on "Customisers" in the home page menu
Click on the customiser you wish to edit
Click on "General Settings" in the left-hand side menu
Scroll down until you see the title for option "Text Alignment"
The available options are "default left align, default, center align and default right align."
Choose your desired option and hit save at the bottom of the form.