Embedding a spread sheet within a spread sheet

Is it possible to embed a spread sheet within a spread sheet?

The reason I ask is due to formatting when designing templates, I often run out of room, but if I could make the same rows/columns cells have variable width, or height I could fit more in, and one solution I see to that is embedding a spread sheet within a spread sheet so each data set can independently be modified.

please let me know if any clarification is needed, many thanks