You need to configure Create Attachments to the users who need to attach files in the permission scheme of your project. The document https://confluence.atlassian.com/jira064/configuring-file-attachments-720411975.html will help you.
You can try our add-on Smart Attachments with workflow validators (https://docs.stiltsoft.com/display/CATAT/Managing+Workflow+Validators) that will check presence of specific file formats in your categories.
If you have any questions, please drop an email to firstname.lastname@example.org
I have multiple projects that use variations of the same base workflow. The variations depend on the requirements of the project or issue type. The variations mostly come in the form of new statuses ...
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