How do the locators get paid?

Okay.

Lets make an example

Seller is asking $1.8M for it. A loactor I work with passed it onto me at $2M.

I get a contract between the sellers, and my buyer for the proprety at $2M.

After close of escrow, there is still $200k left with the title company. Now, the locator can submit an invoice for the $200k, but who signs off on it. Does the seller have to authorize the invoice, being that it is technically “their” money?

I get paid on the back end so I’m not worried about it, but I wanna make sure the process of how my locators would get paid.