How to make certain Issues visible only to a specific user group in YouTrack -

in our youtrack project issues historically visible "all users" group same name shipped youtrack.

now adding new users restricted permissions , should see small part of issues. should start seeing no issues @ all, , single issues (old issues , new issues) should selectively made visible them.

i tried different ways make happen, without success.

1) if create group them "restricted group" - can give group permission view issues. , can see issues, , if uncheck "view issues" privelege checkbox, cannot see issue @ all. not me, either see issues or none.

2) tried change "issues visible to" field in single issue , set "restricted group". youtrack won't let me, "all users" or "project xy assignees" can selected here. edit: still true, after add myself "restricted group", see alex.v's answer question

so deleted group "restricted group" , tried work "assignees":

3) choose issue , set visibility "my project assignees". , add user "my projects assignees" group. user can see issues in project. in group settings find out, checkbox "read issues" in definition of group's role "developer" can unchecked, , changes visibility. again issues! , not matter if set visibility issue "my project assignees" or "all users" - user can see no issues @ all, after unchecking checkbox.

this youtrack 4.2.2 (build #6029 [23-may-2013 18:30]

please show me way selectively make issues visible group of users , invisible again. know possibly quite simple, mistake?

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in meantime able understand how view permissions work.

the dropdown box @ top of issue page acts filter , can exclude users dropdown box see issue when visibility still set "all users".

so think 1 way accomplish want have change issues' visibility let's "admin1 group" , later switch of them "all users" can see those.

as second variant, can choose group belong in "issue visible to" combobox. variant work in other aspects?