Gabrielle is doing exactly what the standard approach is. There's no "close project" function, as it's something you need to define for yourself really. So, you need to decide what your users can do in a "closed" project, build a permission scheme for it and apply it to your "closed" projects. Your main decision is probably "who can browse closed projects"
You simply can't "close" a project in JIRA.
if you delete a project it's deleted. You can't close a project in the classic project meaning.
When you want a project with start and end date you should use the versions of a project or configure issue types with name project.
Projects would be in this case like departments or products.
and you issue types could be projects, mile stones, task, sub-task to break down your issue-like project.
Project ~ DEV
Issue types = Project - is blocked by Issue types = Mile stones - is related to Issue types Task which have subtasks for a assignee based breakdown.
Basically, if you`d like to follow with Gabrielle's solution, I believe these 2 pages will be able to guide you:
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