Putting Item on pet: Open up Pet Formation (Alt-Y). Open up Inventory (Alt-I). Drag unit-carded item from inventory to the pet's item slot
Summoning Pet: Open Creature window (Alt-R if it's not already open). Select pet (click on pet avatar), and click Summon Creature rappelz-item.com/tag/skill/">skill (Alt-S and look for Summon Creature and drag it to one of the skill. shortcut slot to make it easier future summon and unsummon).
To make creature attack: Press Alt-T. Drag any skill there that you want regarding Creature Attack to the skill shortcut slot. We usually do Combined Creature Attack as my F1. Select hostile target. Press shortcut key to make the creature attack the selected target.