Hi
In the current version of the extension, it is not possible to create custom fields and add it to order form. This is one of the feature which I will add to next version (together with custom fields for Documents) .
For now, If you want to add new field into order form, you need to :
1. Add a field to t0r4j_dms_orders database table .
2. Edit the file components/com_dms/views/checkout/tmpl/default.php to add the field input .
Hope this help !
I am sorry for lately response. Last week, I had a personal work and could not spend much time at the office to reply to forum posts .
If you need more help, please let me know .
Thanks,
Tuan