You can easily manage attachments directly from the issue profile page. Attachments can be added by clicking the "Browse..." button or by simply dragging and dropping a file directly from your computer. Once an attachment has been uploaded, it can be downloaded by everyone who has access to this issue. Deleting attachment, however, is only possible for users who have 'Editor' or 'Admin' permission. There is no limit in the file size of the attachment and an unlimited amount of attachment can be added to the same issue.