How to autofill support
You got autofilled and now your supporting. First question is, Who do you pick? Before picking a champion ask yourself this.
*Do I want to just kill people. If the answer is yes then there is no way you are going to be a good support. You have a couple of options here but your probably going to want to pick a mage support. This is ok. This is a normal thing in the game. Its even ok to steal kills from your adc, however if you were giving the support role your job is to peel your adc regaurdless. If you decide to go in the mid lane and start farming, your trolling. If you decide to go in the jungle and start farming, your trolling. If you decide to go cheese the enemy laners and junglers, your borderline trolling.
Acceptable picks:

Acceptable builds:
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these 3 items together can give up to 180 AP )