Modifiers for Services

[Spiro_Spero_Spa]

Services need 'Modifiers' just like Items!!

I offer several different (base) facial treatments which I've listed individually in my 'Online' > 'Items' >  'Service Library' for online booking purposes. 

I also offer add-on services such as eyebrow wax, dermaplaning, and phototherapy. 

I want the add-on services to be available for booking only when accompanied by a facial treatment. Meaning, I don't want clients to be able to book 'phototherapy' without also booking a base facial treatment. 

There needs to be a way for clients to book add-on services. If they can't book them, then I can't allot the appropriate amount of time and resources to complete that add-on service at the time of the base treatment appointment therefore I'm losing $$$!

@Beta @admin 

[Trueglow]

Please add this--it allows you to add the modifiers to the services when you select to 'add to items', but it doesn't show up online.  This has been requested for over 5 years--please add this much needed functionality!!

[juliaskwarlo]

please add this!!! this is such a simple request and such a pain not to have.