This question is in reference to Atlassian Documentation: JIRA User cannot add Watchers to an issue
Jira user cannot added watchers when they create the ticket? When i added the user to single user?
Generally, no, not unless you have a "watchers" field added to the create screen (there's an add-on for that)
I don't understand "when I added the user to single user" - you don't add users to other users, it doesn't make sense.
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