You can configure additional sending conditions for both “Invoices” and “Packing Slips” using order tags and payment gateways.
Find more information through the links provided for each option
Order Tags (Specify Automatic Sending Conditions): https://kb.wizardlabs.cloud/invoice-wizard/can-i-automate-invoices-for-specific-customer-groups/
Order Tags(Prevent Automatic Sending Conditions):
https://kb.wizardlabs.cloud/invoice-wizard/how-can-i-prevent-sending-invoices-automatically-for-orders-with-a-specific-tag/
Payment Gateways(Specify Automatic Sending Conditions): https://kb.wizardlabs.cloud/invoice-wizard/how-can-i-automate-invoicing-for-specific-payment-gateways/
Payment Gateways(Prevent Automatic Sending Conditions): https://kb.wizardlabs.cloud/invoice-wizard/how-can-i-disable-automatic-invoice-sending-for-specific-payment-gateways/