Hm, it looks like there is a bug here. If there is no due date, it should display as "No due date" instead. I will add this into our issue tracker internally.

As for linking to a single task item, unfortunately we do not have such links available currently.

Well, thank you....

No problem But I find it odd because why is your group tasks appearing in the user's task eh?

My objective is for the author group had maximum rights. He has the right to create user tasks and after completing put a mark on the implementation. I want to create distance learning. Instead groups will be courses and course authors will create tasks for team members. I think it is wrong that the participants themselves create tasks and themselves mark their implementation.
The participant groups will be in your profile see the tasks that he must perform.
I redid the application - files for groups. (http://onlytest.ru/index.php?option=com_easysocial&view=groups&layout=item&id=2:group1&appId=33:files&Itemid=141)
I want only the author can upload files. You have in the file Manager, any members group can delete any folder created by any user. The user cannot delete other people's files, but the wrong folder can delete. Only I couldn't remove the left column. If not difficult prompt as to make so that only the author group can perform operations with files and folders.

And I have a question - how make link to events with only events of the group.

I have a lot of questions and requests about improving functionality, but I'm probably too much to ask.

Thank you

You are most welcome