Filter Sales Invoice items by item group

ERPNext Selling/CRM
1

Hello there,

Please i want to add a filter for items in Sales Invoice that shows all item group as a links and when the user click on it, it shows only items related the item group like this image

Is there a light way to do this from customizing forms? or is there any solution to do this,

Thanks in advance

2

i found that if an item is labeled as a service, it wont show up on the website, it has to be labeled as a product.
cheers,]
mike krol