A text when somebody sets off, and a page that says who is coming
When your crew taps "on my way", the customer gets a text with a link to a page naming who is coming, the window, and the van to look for — and it stops working a week after the job.
Your crew taps on my way and the customer gets a text with a link. The page names who is coming — with the profile you published for them — the appointment window, and the vehicle to look for. When the crew arrives it stops describing a journey and becomes a confirmation. A week after the job is done the link stops working, and the office can see, kill and replace a customer’s link at any time. Crew plan; texting on the same consent as every other text.