Multiple user pools in resources

Serverless Framework
1

I tried to create multiple user pools in my serverless.yml file but don’t seem to get the formatting right.

resources:
  Resources:
    UserPool:
      Type: AWS::Cognito::UserPool
      Properties:
        UserPoolName: ${self:service}-${self:provider.stage}-client-user-pool
....

i tried seperating them with:

resources:
  Resources:
    UserPool:
      -  Type: AWS::Cognito::UserPool
         Properties:
           UserPoolName: ${self:service}-${self:provider.stage}-client-user-pool
....
      -  Type: AWS::Cognito::UserPool
         Properties:
           UserPoolName: ${self:service}-${self:provider.stage}-manager-user-pool
...

but i get Template format error: [/Resources/UserPool] resource definition is malformed
Is there a way to define multiple user pools in the resources section, i need one for the clients and a seperate one for the backend

thank you

gr Marco