Create the units with their ownership shares or pull them straight from the Land Registry.
Properties are the foundation of the whole financial side: expenses are split across them according to their ownership share, and that is where each resident fee comes from. It is worth taking your time here so you do not have to correct fees later.

The ownership shares of all properties must add up to 100. The application warns you if they do not.
If you know the Land Registry reference of the building, you can skip creating units by hand:
The properties are created with the registry data already filled in. All that is left is to adjust the ownership shares and assign owners.
You can also upload a file with the full list of units. Download the template from Import properties, fill it in and upload it; you will see a preview before confirming.
Once you have a lot of properties, select them with the checkboxes on the left and apply changes to all of them at once:
Check that every property has an ownership share, an owner and the right expense categories. If a garage should not pay for the lift, remove that category from it: this is how you make the split of costs match what the community agreed.