Price of service

Hi all. In my booking service I want to have 3 different price to same service and at the end sum all price.
In particular I want to have:
1- Adults 10€
2- Children (up to 8 years) 7€
3- Children (under 4 years) free

I wish that the customer can select how many people are provided by type and eventually the system will calculate the total.
I created the service but do not know how to implement this function.
Can anyone help me?
Thanks for the help.

Hi Ivan,
In this case, you can use the Custom field (Select list) with 3 options and additional cost for each option
Thanks
Dam

Dang Thuc Dam wrote: Hi Ivan,
In this case, you can use the Custom field (Select list) with 3 options and additional cost for each option
Thanks
Dam

Thanks for your reply. With custom field the user can select more than one person?
Example: 2 Adults (2x10€), 3 Child up to 8 years (3x7€)? Total price: 41€

Dang Thuc Dam wrote: Hi Ivan,
In this case, you can use the Custom field (Select list) with 3 options and additional cost for each option
Thanks
Dam

I've test your solution but don't work because I can't chose more than one option.

Hi,

Did you ever find a solution to this as I need to do exactly the same thing?

Thanks