I would like to setup a JIRA CORE project to manage my recruitment processes.
However, I have several ones and I would like to combine it such as on Jira Software with Tasks and Subtasks.
Do I have a similar why to do it in JIRA Core?
Welcome to the Community!
Yes you should be able to create Tasks and Subtasks for a Jira Core project as they are just issue types that need to be assigned to the configuration for a project.
That being said, I believe that subtasks don't appear on Jira Core boards which may limit your ability to use them.
I hope that helps get you started!
Sorry looks like that's not an option at the moment. According to here:
Looks like the Atlassian Support team has indicated that there is an open ticket requesting this functionality: https://jira.atlassian.com/browse/JRACLOUD-62667
My best advice would be to vote for that issue and add any details specific to your use case that might be missing from the original request.
Sorry I can't be of more help!