Group Shifts, Ratios and More Than One Worker: A Practical Look at Advanced Bookings

What 2:1 and 1:2 actually mean on a roster, and how group bookings with multiple workers and participants come together in Sparks Provider.

Published 17 October 2026. Published by Sparks Support Pty Ltd, the makers of Sparks Provider.

The short answer

A 2:1 booking means two workers support one participant. A 1:2 booking means one worker supports two participants. The workers always come first in the ratio. Sparks Provider's advanced booking tool books everyone for the right time, pays each worker once for their own hours, and invoices each participant their own share.

If you have ever stared at a roster line that says 2:1 and wondered which number means what, you are not alone. Workers come first in a ratio. A 2:1 booking is two workers supporting one participant, usually for higher intensity support. A 1:2 booking is one worker covering two participants at once, like a shared community access session. The ratio can shift mid-booking too, if someone joins partway through or leaves early.

This matters more once you stop being the only worker in your business. A solo support worker rarely needs to think about ratios. The moment you take on a second or third worker, or start running group sessions, you need a way to book several people against several staff without manually juggling separate shifts, separate pay and separate invoices.

Two ways to build a booking with more than one person

Sparks Provider gives you a quick path and a detailed path, and the right one depends on what the booking actually looks like.

• Quick group booking: everyone is in for the same start and end time, and every worker supports every participant. Good for a straightforward group outing or a simple 2:1 shift.
• Detailed planner: use this when people have different arrival or departure times, when staff cover only part of the booking, or when a vehicle trip is shared between participants and its cost needs splitting across them.

Setting up the quick way

• Open Add a shift, choose the service location, date, times and your first participant and worker.
• Choose Add another participant or Add another staff member, then tick everyone else who is involved. Staff who are already booked or marked away at that time are listed under Unavailable at this time instead of being offered.
• Check each participant's price book, then choose Create group booking. It goes straight onto the schedule, with everyone booked for the whole time.

When to switch to the detailed planner

Choose Use the detailed planner from the Add a shift screen whenever the group is not perfectly symmetrical. Set the service location and the whole booking's time window first, since every time in the booking runs on that location's clock. Then set how many participants and staff are involved, and for each participant choose their support item and whether they attend the Whole booking or only an Individual attendance period. For each worker, choose Whole booking or Individual staff times. A worker is paid once for their own time, no matter how many participants they supported during it.

A fictional, anonymous example

Picture a fictional, anonymous support worker who has just taken on a second casual worker. Three participants want a Saturday outing together, but one joins an hour late and the group travels in one car. Using the detailed planner, the business owner sets the full booking window, adds the three participants with the late arrival entered as an individual attendance period, assigns both workers for individual staff times, and adds a shared journey so the driver can log the actual kilometres afterward and have the cost split across the participants who travelled. Review booking shows the support timeline and the ratio before anything is saved, so mistakes get caught early.

After you save it to schedule

A saved booking appears on the roster for every participant and worker, and in each worker's own shift list. Nothing is paid or invoiced yet. Once the shift happens, hours still need approving in Timesheets. Approved hours become invoices drawn from each business's own price book, and approved timesheets can be sent to Xero payroll as drafts for checking. Sparks Provider records and approves the hours; it does not calculate wages or decide pay rates.

Practical takeaways

• Workers come first in ratio notation: 2:1 is two workers on one participant, 1:2 is one worker on two participants.
• Use the quick group booking when times and support are identical for everyone.
• Switch to the detailed planner for different times, individual attendance periods, or a shared vehicle trip.
• Review booking before saving. Nothing is booked or billed until you choose Save to schedule.
• Hours still need approving in Timesheets afterward before a shift becomes an invoice or a Xero draft timesheet.

Related reading on Support Worker HQ

• When Separate Work Apps Stop Working Well Together (And What To Do About It)
• A Simple End of Shift Routine So Paperwork Never Piles Up
• 5 Everyday Systems Worth Setting Up On Your Work Phone
• The 15-Minute Weekly Admin Review Every Independent Support Worker Should Run

For a visual walkthrough of advanced bookings, see the Sparks Provider how-to videos at https://www.youtube.com/playlist?list=PLZlqhhCs9bQI.

This article is general information only and is not financial, NDIS or compliance advice. NDIS pricing and claiming requirements can change, so check the current NDIA pricing arrangements and provider guidance before relying on it.

Need a simpler way to run your provider business? Explore Sparks Provider. $499 a year including GST, with unlimited staff and clients.

Questions or corrections? Contact the publisher. Please do not send client or health information.