How to use mutlipe Users in App owns data incase of RLS

I have two roles here, which contains 200 users in both of the roles, how can I modify the app owns data code so that I can establish relations for both of the roles with all the users??? How can edit the app owns data code here, I have been using the embedded sample for RLS, but I couldnt able to find how to use those users here is the sample of them:

 generateTokenRequestParameters = new GenerateTokenRequest("View", null, identities: new List<EffectiveIdentity>
{ new EffectiveIdentity (username: "testA@mydomain.com",
roles: new List<string> {"RLS ClientID 256", "RLS Client ID 5"},
datasets: new List<string> {"4cb6c656-b437-4769-ae98-ac0e673635ce"}) });
}