Recording multiple times on same form

[madpad]

Hello All
I have a form with different elements set to different access levels.

First in registered access, a set of elements are filled and saved.
The ones with special access are read only, so cannot be edited by the registered users. When saved, it automatically records date time when the data was saved.

Now from a list, an admin with Special access views the record, and adds his comments to the remaining elements that have special edit access.

I would like the date time of the admin access to get recorded separately as a different element automatically. Is this possible? Or should have multiple forms, and join the data into one list?

Thanks.