Custom Field with Product Option variant

Hello

first of sorry for my bad English

I have one requirement in Hikashop product detail page.
in that i have set one option variant with product like gift message.
when gift option is select then 3 more custom field will be shown to user field like is .TO,FROM,MESSGAE
how it will possible>

Nicolas, I hope you are doing well.

I am using tabs on the product page. But, I need to add custom content to the "specifications" tab that would contain this information. But, how do I control where the content is added in the tabs on the Product pages?

Operating Pressure: 4-20 cmH2O, 1 cmH2O increments, Automatic altitude adjustment ≤ 8,000’

Ramp Operation: 0-45 min + 25% time variance, Adjustable starting pressure

Compliance Information: AHI & leak detect, Total therapy hours: Therapy session ≥ 8hours, 6 hours, and 4 hours, Total blower hours, 13 months daily compliance storage

Dimensions: 6.1 in x 3.5 in x 2.8 in

Weight: .94 lbs

Sound pressure level: 29 dB

Power Supply: 100-240 VAC, 50-60Hz, 18VDC, 1.67 Amp

Air filter: Disposable filter frame

Operating Range: 41° -95° F, 10%-80% relative humidity, non-condensing

Storage Range: -4° -140° F, 10%-95% relative humidity, non-condensing

How do I create the characteristic like "Operating Pressure" and how do I add the content "4-20 cmH2O, 1 cmH2O increments, Automatic altitude adjustment ≤ 8,000’"?

I found out how to do it. I am still experimenting. But, I think I have it under control.