authorizing client updates

[totem]

I am designing an event planning system which allows the (human) client to access the event data via web page interface and modify event details.

There are some sections of data I wish to have the client provide updated information, but not before reviewing and authorizing the changes (even selecting which fields to allow).

Any ideas on how to temporarily accept the data, but hold it for later authorization?

TIA.

[MAK]

we usually store such information in a transaction table then process it in bacth at night.

Most of the mainframe process also done in such way