Hello, I would like to know if the community version allows you to assign multiple responsible persons to the same task.

I have already tried, but for me it only allows you to assign one person. Even if I have several people with assigned roles in the project, I cannot select more than one person for the same task.

Hello Jarciano,

for the moment, the only way to add multiple persons as assignee to a work package is to make use of groups. [1]
Multiple assignees without group creation is one of the feature requests with the highest vote count here. The corresponding EPIC is on the roadmap. You can follow its progress here:

Best,

Alexander

[1] https://www.openproject.org/docs/system-admin-guide/users-permissions/groups/#manage-groups