I currently have the following setup for each rank on my server:

Guest to Member:
  prerequisites:
    in group:
      value: Guest
  requirements:
    time:
      value: 1h
  results:
    command: pex user @p group set Member
  options:
    display name: Member
    auto choose: true
    priority: 1

The issue I'm having is that Autorank will not execute the commands I specify after 'command:'. I have tried adding 'value: [command]', as well as using quotation marks to encase the command. However, after each reload, the quotation marks disappear, and the command is not executed.

Really sorry about this. This is the second time I've made a dumb mistake and asked for help here. I just realized it's &p, not @p.