hi, @ubbas.
Glad you reached out. I can help you create custom fields.
The first option you have is to use some PHP code that allows you to create custom fields and place them where you prefer. We dig deeper into this and give a few examples here https://givewp.com/documentation/developers/how-to-create-custom-form-fields/.
On the other hand, we have a solution for people that are not familiar with code that is a premium add-on called Form Field Manager and it allows you to add custom fields too. Form Field Manager, or FFM for short, is a premium GiveWP Add-on that lets you add custom form fields to your GiveWP donation forms. Form fields include simple fields such as checkboxes, drop downs, radios, and more. The more complex form fields that you can add are file upload fields, and the powerful repeater field.
You can learn more about it here https://givewp.com/documentation/add-ons/form-field-manager/.
Please let us know if you have further questions or need additional assistance!