How to remove "Jira app for Chat", "Sketch", "Slack" and such from the Assignee list?

[Itay Keller]

When opening the assignee list in the issue we also get a potential assignee such as 

•  "Jira app for Chat"
• "Sketch"
• "Slack" 
• ...

How can we remove them from that list and remain them only the real users?

[Nic Brough -Adaptavist-]

Start with a look at the permission scheme for the project.

There is a rule in there that says "Assignee (who can be assigned an issue)".  It's likely to say something like "Role (Users)"

The users you don't want to have on the list all match that rule.  You need to adjust them, or the rule, so that they do not.

[Itay Keller]

I change from 

• Project role
  • atlassian-addons-project-access
• Application access
  • Any logged in user

To 

• Group
  • jira-software-users

But it made no difference.

[Nic Brough -Adaptavist-]

I guess those users are in the group jira-software-users as well.  (Previously, the "any logged in user" would have been allowing them in)

[Itay Keller]

You are right. They are in jira-software-users. with disabled "Remove user" button.
I don't remember adding them to that list and it seems like now I can't remove them.

[Nic Brough -Adaptavist-]

I suspect they are "app users" - users created because an App (add-on) needs a user.

I would change the permissions to use roles (as they're a lot more flexible).  In this case, assuming you have not done much with permissions yet and are close to default, I would

• Work out what users you want to be on the assignee list (or identify or create a group for them)
• Put the users (and/or group) in the role "developers"
• Change the permissions for "can be assigned issues" to "role: developers".