How to get AppRole for authentication

It might seem like a basic question, but I was wondering how do you create an AppRole or see existing app roles in a specific vault. I was interested in using GitHub - namecheap/node-vault-client: A Vault Client implemented in pure javascript for HashiCorp Vault and I didn’t know where to look for the AppRole

In google you can limit the search to a site: approle

The first link is: AppRole Pull Authentication | Vault - HashiCorp Learn