How to manage summoned creatures?

Hy guys! looking for suggestions about playing with monsters/planar ally summoned by PG . How you introduce them in the roll20 grid? Simply like an additional PG ? Any existing macros about it? Thanks a lot!

The 'quickest' and easiest way is to have them set up just like a  mook and give them the basics they'll need to function. Then, when summoned, simply drag and drop like you would any other creature/player/npc. For more automated and specific solutions you are into the territory of the API (a feature which requires the creator of a game to have a pro subscription).