This can be done via the Business Dashboard using the Menu Editor under Online Ordering.
Follow the steps given below:
1. Select Menu Editor under Online Ordering on the dashboard navigation list.
![image](https://lh3.googleusercontent.com/yDsjxlIGdXvhpuFkwpbji38JO3hFYo0CEX5jo4-icFKzDitnmcRBzE2TQ6OCSCiQzdoYpMXv4sGCbihJbFQUnR9yMJPUGFquvJmwz1HdSUjQkhJXDg_sIhvqp2WZwdfedDv2A2iE)
2. Find the Item you want to manage the add-on limit for by picking them from their relevant Category / Sub Category and select the same.
![image](https://lh3.googleusercontent.com/5wlxE7ZrRVveWjlEJxmm7F5PHjgVo9fqg3Nw879RlhTx8UueiljtUtkenReSdbCu8OvVrk0sHoV8BT_V3gx3b3C2YwxRx5na7vhIVuVtUKCsUwhHFrCm5TVLZy7zV0quYfdQl58M)
3. On selecting the Item, you will see the Item Details tab for the same, scroll down to Add-on group for this item.
![image](https://lh4.googleusercontent.com/10qwLUS2flbqqNTvInuDlrFVMZetev37yausNUEO5ZkeyKlnwc_xzk5-erwYo2kvoo1Ejdlzp6oi3i8m12CLyl3XauQU5_k7ry6CTNV39S7jybzy5xYbtz36xTm_91EvZ0t-_Jbk)
4. Click on the pencil icon
on the top right corner of the add-on group you want to set a limit for.
5. Choose the Minimum and Maximum add-on items that can be selected and click on Save Add-on Group.
![image](https://lh3.googleusercontent.com/LJYtKHPLm-4N0irl9IG7-Ub8ux_51abJ849tepnDPxqq6dBB7llwq5MlhfFBaEnjGDvY2J4Wvv4QjfGyx0kVKKaU_xypuyfvOmlBnowiANhhx0Vbmm9ibvv99MbufkGlNmcXYMs-)
6. Once you're done with edits click Save.