In Workday Adaptive Planning, modeled sheets offer flexibility in time stratum configuration, allowing administrators to select any time stratum that is defined and available in the instance's calendar — including Month, Quarter, Year, or any custom stratum configured for the instance. This flexibility distinguishes modeled sheets from some other sheet types that may be bound to the default instance time stratum. For example, a Personnel modeled sheet might be set to a monthly stratum for per-pay-period tracking, while a Capital Projects modeled sheet might use an annual or quarterly stratum. The available strata are determined by the time calendar setup in the instance. The time stratum for a modeled sheet is not determined by the version's time stratum (versions inherit the instance default). It is not limited to quarterly only. It is not restricted to the instance default — the key advantage of modeled sheets is the ability to choose from all available strata. Reference: Workday Adaptive Planning — Modeled Sheet Configuration, Time Stratum Selection, Sheet Design.