New Mod having trouble setting up Auto Mod.

My friends and I have a new sub and have been trying for weeks to set up auto mod. The only thing we want it for is to filter accounts that join the sub, to be at least 3 months old.

  1. Can we set it up without a wiki?

  2. Is there an auto mod guide for dummies? Lol.

Any help would be appreciated.

Thank you.