In Rantevo a provider is a person a customer can book with. Bookings are made against a provider, not against the business, so you need at least one even if you work alone.
Go to Team in the admin. It lists everyone who works at your business, and the Bookable switch on each person's sheet decides whether customers can book them.
Adding someone
Press Add team member. A name and an email address are required: the email is the account they sign in with, and nothing is sent to it until you invite them. A photo and a short bio are optional. Both appear on your public team page while they're bookable, and a real photo helps.
On the Schedule tab a new person starts bookable, with every service ticked under Services they provide and your opening hours as their working hours. Untick the services they don't do.
Someone with no services ticked will never be offered to a customer, and a service with nobody ticked can never be booked. Those two facts cause most "nothing is available" reports.
Their working hours
Each person's week is under Working hours on the same tab. The times a customer is offered are the overlap of your business hours and that person's hours. If your business is open 09:00–18:00 and someone works 09:00–13:00, they can only be booked in the morning. Changing your business hours won't change that.
A day can hold more than one set of hours. For a lunch break, press Add hours and split the day into two blocks, such as 09:00–13:00 and 14:00–18:00. The gap between them is never offered. A day with no hours is a day off. If someone's hours run outside your opening hours, the sheet says so, because customers aren't offered that time.
Letting them sign in
Access, on the Profile tab, sets what they can open in the admin: Owner, Manager or Staff. Staff see their own day, their own time off and the customers who book with them. Only an owner can change access or press Send invite, which emails them a link to set a password.
One-off changes
For a change on a single date rather than a weekly pattern, such as a late start, a training afternoon, a day off or an extra shift, go to Availability. See Close for a holiday or time off.
When someone stops taking bookings
Turn Bookable off to stop new appointments. The ones already made stay in your diary.
If they leave for good, an owner presses Remove from team, in the ⋯ menu on their sheet. Nothing is deleted and nothing is cancelled: past appointments keep their name, and anything still to come stays booked with them. To find those, pick them in the Staff filter on Bookings, then use Edit to give each one to someone else, or cancel it. An owner can put them back on the team at any time.