Managing your nursery children
If at all possible, the best way to manage nursery children in Insight is to add them into your MIS, and import them along with the rest of your pupils.
This ensures a smooth transition when those pupils move from nursery into reception. Often this causes problems, since children are frequently entered into an MIS with a differently spelled name, and sometimes DoB, to what's previously been entered into Insight. If you're only assigning UPNs at this point, Insight will have no way to know which pupils are the same if any of the other details change.
It's also useful because it'll ensure that your nursery pupils end up in the right year group, of N0, N1 or N2. These often cause confusion since different settings take these to mean different things. The way Insight works is based on the way SIMS works, in which these labels refer to the number of years spent in nursery. If a pupil is due to start reception in 2021-22, then Insight will work backwards to calculate:
N0 = 2018-19
N1 = 2019-20
N2 = 2020-21
YR = 2021-22
Nurseries will often move pupils between rooms or groups mid-year, even though their entry to reception date hasn't changed. This can be managed by assigning your pupils to classes in Insight. You can then do all your analysis and data entry based on your classes, but children shouldn't ever need to have their year groups adjusted unless they're deferring reception by a year.