Redmine plugin for adding assignee functionality includes default query and reminder to Custom Users.
*) Custom Users means the users specified in the Custom field of the User format AND check box named "Use as assignee" is checked.

This plugin can realize multiple assignees on issues for review tasks by multiple people use case and so on.

• send email notifications to Custom Users who are added or removed on issues, or all Custom Users as broadcast when Custom Users are not changed on issues, as well as authors and assignees.
• send reminder to users set in Custom Users on issues
• issues that Custom Users are listed on are queried as assignees such as "My page" > "Issues assigned to me"
  *) Use "just Assignee" field instead to proceed query by the original scope of "assignee".

The recommended operation is keeping a ticket manager in the original Assignee separated from Custom Users assignment.

1. To install the plugin

   git clone to plugins/custom_users_as_assignees on your Redmine path (or take at tag file, it's better)

    $ cd {RAILS_ROOT}/plugins
    $ bundle exec rake  redmine:plugins:migrate  RAILS_ENV=production NAME=custom_users_as_assignees
    $ git clone https://github.com/preciousplum/custom_users_as_assignees
   

2. Restart Redmine.

   Now you should be able to see the plugin in Administration > Plugins.

• Create a custom Field with a Type user

This plugin has been tested on Redmine 5.0.x.

This plugin was initially developed by preciousplum