1
Tap +
On Home in the shared space, or in Shared Costs.
2
Type the amount and answer What was it?
3
Choose From and To
From lists Who Paid first: You, then the others. To is the category.
4
Check For
It starts as your space’s answer, often For Everyone. Tap it to choose someone, or Choose People… to share Equally (As Usual where shares differ) or by Amounts.
5
Tap Add