Veritas Enterprise Administrator (VEA) gui is only used to perform volume manager tasks. (Such as creating volumes, diskgroups, import/deport or mount/dismount etc)
For actually managing the cluster such as SQL service group failover, offlining/onlining resources etc, you will need to use the Cluster Manager (java console).
As long as you have the service group setu pcorrectly with the right resources, when you switch the service group from Node A to Node B, it should fail it over fine.