This guide might not be complete in a way that is accurate to the server... (I'm not sure if rs3 released any new summoning familiars)
but nonetheless this guide should be good enough to get you on the right track to train summoning. If this guide is incorrect for the server please let me know
and I will make a new guide based on the way summoning is handled ingame. Thanks!
(The way to train summoning on here is by using the ingredients on the pouch) EX: Use wolf bones on the pouch while having the other ingredients (gold charm and shards) in your inventory.