Hello @Simon Cao
Welcome to community.
What are you showing on your screenshot is a default automation for scheduled rules you need pain add-on
When you install it go to project-settings-project automation there you will be able to add scheduled issues.
You might also need this, corn expression generator
Your information is really helpful !!! but do we mean the same thing? I mean the "Scheduled" trigger which is introduced in your official site:
This is what I want exactly. (see my attached picture), I don't want other similar addons.
Does it only exist in Jira Cloud version ?
You checked that you use server, not cloud, if you are using server you will need to install automation for Jira.
IF you are using the cloud this add-on is included by default, it the same thing.
Here is an automation sandbox if you want to get familiar with automation.
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