I need to hire a developer to make a custom billing/invoicing/client module for me. It needs to have customizable invoice fields. I also need to be able to set it up so that clients can select appointment dates based on the dates I have made available to them. It would be nice if the available dates can be set per person and per group. It does not need to include payment gateways, but clients need to be able to view only their invoices and appointments. I think it needs to have different types of appointments, too. It is late and I'm sure this might not make lots of sense. PM or email me for more details and to make a bid.

Thanks in advance!