function setup_() {
  let ss = SpreadsheetApp.getActiveSpreadsheet();
  if (ss.getFormUrl()) {
    let msg = 'Form already exists. Unlink the form and try again.';
    SpreadsheetApp.getUi().alert(msg);
    return;
  }
  let form = FormApp.create('Equipment Requests')
      .setCollectEmail(true)
      .setDestination(FormApp.DestinationType.SPREADSHEET, ss.getId())
      .setLimitOneResponsePerUser(false);
  form.addTextItem().setTitle('Employee name').setRequired(true);
  form.addTextItem().setTitle('Desk location').setRequired(true);
  form.addDateItem().setTitle('Due date').setRequired(true);
  form.addListItem().setTitle('Laptop').setChoiceValues(AVAILABLE_LAPTOPS);
  form.addListItem().setTitle('Desktop').setChoiceValues(AVAILABLE_DESKTOPS);
  form.addListItem().setTitle('Monitor').setChoiceValues(AVAILABLE_MONITORS);

  // Hide the raw form responses.
  ss.getSheets().forEach(function(sheet) {
    if (sheet.getFormUrl() == ss.getFormUrl()) {
      sheet.hideSheet();
    }
  });
  // Start workflow on each form submit
  ScriptApp.newTrigger('onFormSubmit_')
      .forForm(form)
      .onFormSubmit()
      .create();
  // Archive completed items every 5m.
  ScriptApp.newTrigger('processCompletedItems_')
      .timeBased()
      .everyMinutes(5)
      .create();
}
Creates the form and triggers for the workflow.