What is VMware HA Admission Control?

How can i test VMware HA Admission Control in the following setup? or

Please explain which scenario we are using this option?

My Setup Details as follows:

1. 192.168.1.3 - Vcs(6.0)
2. 192.168.1.40 - Storage
3. 192.168.1.11 – Esxi A (6.0)
4. 192.168.1.12 – Esxi B (6.0)
5. 192.168.1.21 - Windows 7(Client)

Please help to find above scenarios.