This can be done via the Business Dashboard using the Menu Editor within Online Ordering.
Follow the steps given below:
Select Menu Editor under Online Ordering on the dashboard navigation list.
![image](https://lh3.googleusercontent.com/yDsjxlIGdXvhpuFkwpbji38JO3hFYo0CEX5jo4-icFKzDitnmcRBzE2TQ6OCSCiQzdoYpMXv4sGCbihJbFQUnR9yMJPUGFquvJmwz1HdSUjQkhJXDg_sIhvqp2WZwdfedDv2A2iE)
Find the Item you want to convert into a combo by picking it from their relevant Category / Sub Category and select the same.![image](https://lh3.googleusercontent.com/5wlxE7ZrRVveWjlEJxmm7F5PHjgVo9fqg3Nw879RlhTx8UueiljtUtkenReSdbCu8OvVrk0sHoV8BT_V3gx3b3C2YwxRx5na7vhIVuVtUKCsUwhHFrCm5TVLZy7zV0quYfdQl58M)
We'll create Combos by means of using Add-ons itself.
On the Item Details window, scroll down to Add-on group for this item section.
![image](https://lh6.googleusercontent.com/RQxsgjXCyeKgVVbUahX5enFnwJMnNiklv75TssGC9vVob1GZURBiqpuTNO2L9bylChx1e445s-jQcga-GlRFTIigBSgXyKlxYgKVgpQeOTStpk8_m2EXeD7dOvOmUxcUwb-IbXTV)
Create add-on items within predefined groups, like ‘Extras’, ‘Toppings’, or general ‘Add-ons’ or choose to "Make your own".
You can also Copy from other items.
Enter the Add-on group name.
Select the Minimum and Maximum add-on items that can be chosen by the customer.
Enter the Add-on Item Option name.
Select the Item Attribute from the dropdown.
Enter the Additional Price for the item it is added to.
![image](https://lh3.googleusercontent.com/LJYtKHPLm-4N0irl9IG7-Ub8ux_51abJ849tepnDPxqq6dBB7llwq5MlhfFBaEnjGDvY2J4Wvv4QjfGyx0kVKKaU_xypuyfvOmlBnowiANhhx0Vbmm9ibvv99MbufkGlNmcXYMs-)
Once you're done with edits click Save Add-on Group.