You can add personalization inside the process(es) that is assigned to the products.
Adding personalization to products is a staple in the decoration industry. Here is a breakdown of what each option type is and how you can add personalization fields for your customers.
Types of Options Explained
1) Name (Text Field): Is intended for allowing customers to add their name to a garment but can also be used to collect custom information.
2) Number (Text Field): Is intended for allowing customers to add a number to a garment.
3) Group (Drop Down List): This options provides the customer with a drop down menu of options that are pre-determined by the dealer. Ex: Rosters or Coaches, Corporate floors or departments, etc.
4) Exclusive Group (Drop Down List): Provides the customer with a drop down menu of options pre-determined by the dealer, however, once the option is selected by a customer and added to their cart, that option will disappear from other customers. This is a great way to give your customers a chance to select their jersey number without fear of someone else selecting the same number twice.
How to Add Personalization Options
1) Select Processes from the Left-Hand menu
2) Select 
for the process you wish to add the personalization to
3) Select the 
next to 
4) If you have already created an option from a previous process, select "Existing Option" and select the one you wish from the drop-down menu. However, if you're creating a new process you will select "New Option" and select the type that fits the group's needs.
5) Give the option a title
6) Select
7) Complete all the necessary info needed to save the option. (Pricing, Requirement, and Ecom Display, etc)
8) Select 
9) Repeat steps for as many options that are needed