In the close combat phase the player whose turn it is may strike glancing blows with models which are up high against enemy models which are also up high. No charge needs to be declared, the player simply pairs off his model against his opponent's model.
The player may choose which of his models will attack which enemy model/s, and he may decide to attack all of his models against the same enemy if he wishes.
Glancing blows are fought as follows. The attacker makes all his attacks in the normal waY, including any attacks from ridden monsters. So, roll to hit, and roll to wound as normal. If fighting against a monster and rider, work out which is hit exactly as you would for combat on the ground. Take any saving throws exactly as you normally would.
Once the attacker has struck his glancing blows the combat is over. There is no combat result, no Break tests are taken and neither model will flee or pursue. The attacker has pounced, struck his blows, and the two models have parted.
Note that the model which has been attacked does not strike glancing blows. Only the player whose turn it is fights. This is very different from normal combat, and represents the fleeting, momentary fighting as an attacker swoops upon and past his enemy.