Question on implementing Sites

@raj: We are using Site feature a lot and the way your point #1 & 2 are handled, is described below.
For each task form, we have two default buttons "Save" and "Close".
Clicking on Save button stores all the values in PV. The button doesn't have any validation and therefore even if user doesn't fill up few required fields, it won't show any error.
Clicking on "Close" button will submits the form and then will loop back to the same User Input node creating a new similar task for that user. (no activity chaining in this case)
On site page, the moment user clicks on the Close button of the task form, site page refreshed and brings user back to all task view on Site page. We have educated users to always use "Close" button to close a task and "Save" button to save any data on the form.

@raj: We are using Site feature a lot and the way your point #1 & 2 are handled, is described below.
For each task form, we have two default buttons "Save" and "Close".
Clicking on Save button stores all the values in PV. The button doesn't have any validation and therefore even if user doesn't fill up few required fields, it won't show any error.
Clicking on "Close" button will submits the form and then will loop back to the same User Input node creating a new similar task for that user. (no activity chaining in this case)
On site page, the moment user clicks on the Close button of the task form, site page refreshed and brings user back to all task view on Site page. We have educated users to always use "Close" button to close a task and "Save" button to save any data on the form.