we have a custom backoffice pega application ( ie no pega frameworks) . now, we apln to create a pega customer service application as our front office app that integrates with ivr and also our backoffice pega appl . we have few users that will do both front office csr aswell as back office associate roles and need to switch portals . we are debating whether to install the cust service framework app on the same db as our backoffice pega app and leverage the common tables or install on its own db and use remote calls . the later could become a complex implementation . can we install on the same db as backoffice pega app and configure tenants .. any suggestions and advise.