Grouped Products default quantity

Good morning,
I’m developing a site for a customer and I need your help to achieve the following.
We’re using grouped products to sell articles.
We need to set a default value to 1 “one” for all the sub-products on a grouped product like the following example. For us the min max plugin is not the right chioice because we need to let the user choose the quantity, but if he/she already has one product it should be possible to set the chiche to 0 “zero”.

Example Template:
Margarita Cocktail (grouped product)
– Tequila 100 cl –> 1
– Cointreau 100 cl –> 1
– Lime 5 pcs –> 1

Example User choiche 1:
Margarita Cocktail (grouped product)
– Tequila 100 cl –> 2
– Cointreau 100 cl –> 0
– Lime 5 pcs –> 0

Example User choiche 2:
Margarita Cocktail (grouped product)
– Tequila 100 cl –> 2
– Cointreau 100 cl –> 2
– Lime 5 pcs –> 3

Could you help us to identify a solution please?

Best regards
Vasco

https://www.ads-software.com/plugins/woocommerce/