First of all, you must activate the module from your Back Office following the next steps: 

1. Select Configuration > Back Office > Your modules > Order taken settings > Change number of pax.

2. Then come back to the App and select the refresh icon, situated on the top right. 

Then follow the next steps:

1. Click on the number of covers at the top right of the order screen.

2. It will appear a pop-up with the number of customers > select Number of covers.

3. Add or remove covers by using the "+" or "-" or the calculator and click on Validate.

You can also activate a module so every time you open a new order it asks you to choose the number of covers of the order by default. 

In order to activate it, go to Settings ⚙️ >  Back Office > Configuration > Your modules > Order taken settings > Choose number of covers.