To add options, go to Catalogue >> Options.
Press the blue [+] button to create a new possibility.
Fill out the option title, if the store has multiple languages, fill out each.
Enter the sequence number, remember, that it always starts with [0].
Option type can be left as standard buttons – Radiobutton or Text Field, so that text can be entered.
Add value by pressing the blue [+] button.
Enter option text, add an image and sequence number (start with 0).
After that you can add another option value by clicking on [+].