The clients place the shifts themselves. For that reason we have access to as much information about the shift as you do. We therefore advise you to contact the client themselves to get an answer to these questions. You can find the phone number of the client in the shift description. If it can’t be found in the shift description perhaps try Google to try and find an number there! :)
A positive effect of contacting the client about a shift is that they will immediately know you mean business! Awesome!