Channels and supergroups allow setting granular permissions both for admins and specific users. Channels, supergroups and basic groups also allow setting global granular permissions for users.
They can be modified as follows:
channels.editAdmin can be used to modify the admin rights of a user in a channel or supergroup. Basic groups do not allow setting granular admin permissions, messages.editChatAdmin has to be used, instead.
Permissions are defined by the chatAdminRights constructor, some admin rights can only be used for channels, others both for channels and supergroups (see the constructor page).
channels.editBanned can be used to modify the rights of a user in a channel or supergroup, to ban/kick a user from the group, or restrict the user from doing certain things. Basic groups do not allow setting granular user permissions for single users, single users can only be removed from groups using messages.deleteChatUser: however, setting global granular permissions with basic groups is supported.
Permissions are defined by the chatBannedRights constructor, for more info see the constructor page.
messages.editChatDefaultBannedRights can be used to modify the rights of all users in a channel, supergroup or basic group, to restrict them from doing certain things.
Permissions are defined by the chatBannedRights constructor: all flags can be used except for view_messages, for more info see the constructor page.