Not as such. Roles are not really hardcoded any more.
However, QlikView customers quickly discern between "End-users" with minimal insight into QlikView technology - e.g. AP visitors that consult and analyse business data after getting the 3-minute training - and "Power Users" with deeper knowledge of QV data modelling and behavior - e.g. end-users that are able and allowed to develop their own objects/sheets/models in the QlikView Acess Point and even distribute those amongst co-workers.
No they cannot, at least not in QlikView versions up to 11.xx. Here, "models" refers to QlikView Models, as I can't call them "documents" because in the AP you cannot create documents either.
I meant to say that if a QV Developer creates a QVW with a complete data model, but without UI, he/she can make this headless document available in the AP for other Power users to add whatever UI they like.
QV.Next will of course bring an interesting solution to that problem..