On the Local by Toast iOS app:
You can search for restaurants with available reservations via the Home tab by tapping 'Going Out' at the top of the screen, followed by selecting the “Reserve” filter. You can also search for a restaurant directly and tap “Book” from their restaurant details page to see their available time slots, a brief restaurant summary, and that restaurant's unique Reservation policy.
Please note that new reservations can’t currently be made through the Local by Toast Android app.
From the restaurant’s website:
You can visit their booking page. From here, you can create a new reservation using Express Booking (by creating or signing into your Toast Account) or Guest Booking.
From your confirmation page on a past or canceled reservations, you will see a button to “Make a New Reservation”.