Once the candidate has informed you of their decision to accept/reject the job offer, you will need to inform the client. See below for examples:
Once a placement is made, you need to put in the ‘notes’ section of the candidate profile on Temp ID ‘Placed *insert date* *insert company name*’ to allow you to keep track.
Then, on google sheets, insert the details as below on your google sheet. Below is just an example. 
Documentation – asking client to send contract to worker