[otrs] otrs 3.0 templating

Hi all, Have been preparing a test system on version 3.0.9, an upgrade from 2.4.7. Changed all templates to the new way of doing it but we have over 100 templates on AgentTicketEmail.dtl and it takes half the screen, on the 2.4.7 version there was a way to hide templates and just show them when you clicked on a link. Then after clicking the template you wanted the templates would be hidden again and each field populated with the template data. Can anyone enlighten me as to how to do this in version 3.0? thank you in advance Neil