Pokemancy is a system of divination much like many others.
The cards or tiles have meaning related to nature spirits and natural forms of energy (elements).
These are read in a pattern (I use the term array) and meaning is derived not only from the Pokemon and where they appear, but by their interactions.
For example, Water types represent cunning, the mind, reason, adaptability and fluidity (to me at least), Fire types are taken to represent the run away (often destructive, but sometimes productive depending on the Pokemon) passions - Water types are strong against Fire types, so a Water type in position B and a Fire type in position A indicate that A Water type (with given associations) is guiding you through that particular aspect of your life while a Water type (with all its given associations) is guiding you through another aspect of your life. There is also a relationship between A and B, in that A (water) will have a strong influence over B (fire).
Imagine now that in the array we are discussing, position A represents your work life and position B represents your love life.
A water type in A indicates adaptability, cunning and intellect, as well as mobility. Let's say it's Totodile, he is a tough little bugger, expect confrontations and struggle at work, but success and overcoming obstacles. Now we have a Fire type guiding you through your love live. Let's just say Rapidash, run away passion, wildfire, breathtaking but ultimately destructive, a warning not to let things get out of hand.
So because of the fire - water relationship, your work life dominates your love life and so you might run wild with someone for a bit (even if only in your fantasies) but you will wake up and see things differently under the unforgiving light of day and put on your work clothes and go back to the backstabbing and intrigues of office politics.
Does that help?