How to define roles per group

With the new release of identity 2 I am wondering if there is inbuilt support for defining roles on a group basis AND user basis.
Clearly you can define many roles per user using .HasMany() with EF6 but is there a way to define different roles based on a group the user is allocated to? Whereby the users can be in many groups. e.g. user1 is a member of groups A,B,C and has Permissions: groupA: see, no edit groupB: basic admin rights groupC: full admin rights can I map users to groups and roles in this way? I need to be able to do the following: See list of groups See users in each group See list of users See list of groups each user is part of Which are do-able but also:
See user rank in each list of users (e.g. lists for users in a group and list of groups a user is a member of)

Many thanks for any guidence 

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