add info where to find claims

register/README.md

@@ -62,7 +62,11 @@ in order to create a new group within the Unified MU Login service.
 * Project/group name
 * Project members
 
-When you receive confirmation that group is ready, please, visit [OpenID Connect User Profile](https://login.cesnet.cz/oidc/manage/user/profile)
+When you receive confirmation that group is ready, please, visit OpenID Connect User Profile according to your federation:
+ - [EINFRA CESNET](https://login.cesnet.cz/oidc/manage/user/profile)
+ - [EGI](https://aai.egi.eu/oidc/manage/user/profile)
+ - [ELIXIR](https://login.elixir-czech.org/oidc/manage/user/profile)
+
 and provide us with information that you see on the page. That is going to be __access control information__.
 
 After creating a group, you will be provided with a graphical interface for managing group members within the Perun system.