[Koha] Fine charging rules with a different start point

I have someone asking if it's possible to do something like: week1 -> $1 week2 -> $3 week3 -> $5 i.e. the first fine is $1, and the increment is $2 every 7 days. Is this possible? I can't see an obvious way to do it in the circ rules. -- Robin Sheat Catalyst IT Ltd. ✆ +64 4 803 2204 GPG: 5957 6D23 8B16 EFAB FEF8 7175 14D3 6485 A99C EB6D