Hi Nitin,
Employee support tickets (e.g. HR Support) are only visible under the workcenter view Service -> Employee Support and not under Queue or Tickets.
It's important to distinguish between the Agent (the person/employee supposed to resolve the issue), and the Employee (the person who is experiencing the issue). The Agent works in C4C, while the Employee is supposed to interact via Portal, email, and other channels, not directly in C4C
Within Employee Support, each Agent can see the tickets assigned to him by using the My Tickets query, see below.
To create Teams you need to define an Org Structure and then assign Agents to an Org. Another option is to define a Territory hierarchy, and then assign each Agent to one or more territories. Please review the admin guide for these topics.
To set "My Team's Tickets" as the default you need to open the Advanced Filter (the lens icon next to the query name in the picture), and click Organize Queries.
Thanks,
Gab