Once the base of your item is created (name, image, price, description, etc.) you can create a selection block within the item.
NOTEThe block supports three formats of choice:
Single Choice (https://support.tictuk.com/portal/en/kb/articles/selection-blocks-single-choice)
Multiple Choice (https://support.tictuk.com/portal/en/kb/articles/selection-blocks-multiple-choice)
Quantity Selection (https://support.tictuk.com/portal/en/kb/articles/quantity-selection)
For further information regarding these choices, please visit their related pages.