There is no option to configure the delivery delay on AMQP/JMS component. This becomes especially important when setting the scheduled delivery header doesn't work with AMQ7.x/Artemis broker.
This is already available in the upstream camel 3.0:
I have attached 2 files, AmqpDelayTest is the reproducer where the message is not scheduled.
ArtemisCoreDelayTest uses the Artemis core protocol which successfully schedules the message and shows the expected behavior.