Tabular Element in RTC?

Hello,

I'd like to kindly request your help with the following, due to user requirements and to the nature of the information that needs to be stored within our project area, a tabular element similar to a spreadsheet is required to be added to the work item layout. Is there any similar element that we could use within RTC v6 that could be customized to suit our needs ? The closest thing that I've found is the time sheet, but it seems that this element cannot be customized thus it doesn't really solve our need.

Please advice,
Daniel