How do I set mailings to queue?

Your software
My Mautic version is: 5.0.3
My PHP version is: 8.0.28
My Database type and version is: Mysql 8.0.35

Your problem
My problem is:
I do I tell MAUTIC to queue? Where is the QUEUE option?
Seems like all mailings are defaultively sending as they go.
How do I tell it to QUEUE and have the mailings go into the spool?

These errors are showing in the log:

Steps I have tried to fix the problem:


May be you can try on configuration and “queue settings”?