File signed agreements, keep order receipts, bundle handoffs. Every one is ready to run, and you can adjust it in plain language.
Confirm client visits and flag booking differences for the scheduler.
Your clients get appointment confirmation emails with a link to change the time, while your scheduler sees bookings that conflict with the email exchange.
Put the signing link and send confirmation in the client project.
Your client gets the agreement to sign, and you get the request link and send confirmation on the project.
Send approved client agreements and copy their owners.
Your client gets a clear signature request with the deadline, and the agreement owner gets a copy of the invitation.