I'm somewhat confused by the explanation on the link provided.
"The donation plugin is already installed by default with the Business edition of HikaShop. You can find it in the folder plugins/system/custom_price of your website if you want to see its code."
Found it, now I don't know what to do next.
"You will have to create a custom field of the table "item" with the column name "amount" in order to use it.
You can take example on our backend setup of this product and custom field in order to get the same result on your end."
I apologize, but I am lost. I This is one of the most important features on our site and I want to make sure I get this right. I'm using a custom product script; where people can design a product, and the price is variable based on what images, fonts, etc. they chose. I need the price set by that script to populate hikacart. I understand this is the plugin that I need to use, but I don't get where I'm creating a column "amount", and what script I need to add in order to use this functionality in my site.
I would really appreciate your help with this. I will make sure to include hikashop mentions on our website, and we do get a lot of press.