Click “Add Category” on the Redmine interface screen.


Enter the category name and click "New Settings".
Set the category name: Category 1.


Category 1 is set.


Displays Redmine categories.
Category 1 is registered.


To rename or delete a category, select and double-click the category.


The deletion/update screen will be displayed.


[update]
Change the category name and click Update.
Here, change the category name to "Change Category 1".


Displays Redmine categories.


[Delete]
Click "Delete".
A confirmation screen will be displayed, so click "Delete"


It will be removed from the category.


Displays Redmine categories.