Hi Ian, my name is Pat. Thank you in advance for taking your time to hopefully help solve this, I'll try to explain so please bear with me. (I am a total enthusiast willing to learn just trying to make life easier)
I also have a MAC and understand "forms" and not a feature. I would generally create a SS on MAC then open the file/sheet on iPad then create a form to suit on iPad. Most of our SS only use standard formula, we have just started using Index & Match which is fine if you are seeking 1 answer.
The data request is from the image in below
I'm trying to ask the price matrix to give me numerous answers on the same page whist giving accumulative totals.
As requested

I have just created this 2nd Table for accumulating totals but this isn't working either
We sell window blinds, Because the "job" is on-site I am using an iPad, there's a fantastic feature "for us" on 'iPad' numbers, by selecting add sheet you also have an option to add 'FORM'.
Using the form on site I can take multiple measurements (width & drop)
The first measurements return costs on the form.
ISSUE 1. The form sends all measurements to a number SS named 'Form Data' but the SS only records certain data not some costs.

In the top R/H corner of the 'FORM' image above there is a +, when selected I can add more blinds.
ISSUE 2. As soon as I add more blinds the form records the new measurements but doesn't return the value of the multiple blinds recorded.
When a FORM is created a SS called 'Form Data' is generated to receive data.
Whatever we input on the 'FORM' the data defaults to a generic SS and once the form is set up I can in-put data directly on the SS Form Data and the data defaults to the 'FORM'
GOAL. I'm trying to get accumulative totals on 'Look up price Form'
Ian, I may have gone a bit mad with my explanations here, sorry.
Thank in advance
Best regards Pat