Option to configure which trackers can be set as subtasks for each tracker

[ashrafalzyoud]

hi all
how i can configure when i added subtask
if Tracker 1 just only available subtask Tracker 10 and Tracker 11( hide all trackers)
if Tracker 2 just only available subtask Tracker 12 and Tracker 13 (hide all trackers)

[github-actions]

Thank you for contributing to Redmine Issue Templates plugin!' first issue

[ashrafalzyoud]

@akiko-pusu can u help me in this topic??
https://www.redmine.org/issues/27988