Keycloak 20.0.2: I am not seeing the realm roles in user Role Mapping

When I create a User in my realm, and click the Role Mappings tab, according to every SO post I see there should be a way to select the realm roles to apply. But in my case I am not seeing them.

This is what I see:

I am trying to add the manage_users role, so I can use this User to manage users via the API. But almost all the realm roles are missing from the Role Mapping tab.

Can anyone enlighten me about what else I need to do so the realm roles appear, especially the realm_management ones?

In the Role Mappings tab

You need to click on the Assign role button

which will popup the following menu:

and from there you can find the client and realm roles.

I am trying to add the manage_users role, so I can use this User to manage users via the API.

If the previous menu you would change Filter by realm roles to Filter by clients, and the following menu would show up:

and in the Search by role name field type realm-management:

select manage_users and then click Assign. You should see that role being assigned to your user