If you need to print a specific type of an invoice for a certain order or a group of orders, you can use the Print Specific Invoice option. This option will show any invoice templates which do not have any printing conditions set up for them - they are explicitly made for manual selection via this functionality.
If you already have existing invoice templates set up with printing conditions, then you can also make a copy of this invoice and remove the printing conditions from the copy. This way you will have two versions of the invoice available - one for automatic selection based on printing conditions, and one for manual selection via Print Specific Invoice. In other words:
- Copy the invoice templates (Settings > Template Designer > Invoice Template > Copy);
- Remove printing conditions from the copy;
- Manually print specific invoices (without printing conditions).