This is really possible.I tested same scenario for you.Its working perfectly.
First you have to create your desired user name (my_name) an associate with Standard CCM Admin Users.This is basic step need to get access to administrator web page inside cucm.But this does not mean that you have access to any resources but only provide to admin page.
Secondly you have to create new role (My Translation Roles) and assign "translation pattern web page " with read and update permission.
Now create new user group(Translation Admins) and assign the new role you created in the previous step.
Finally You can assign your user (my_name) with this new user group(Translation Admins) created in the previous step.
It will work perfect.
HTH