Thanks I finished creating and get the search box of ajax replace the default box already. But I still have 3 questions above to make clear

1. For example if I want the new searchbox of ajax not in the same line with menu bar, but in below, and bigger file size as the sreenshot here (see red box), how could I do now ? Because bigger search box in separated line will atrract more people.

https://drive.google.com/open?id=1AhCdQyeUZ0_rEHWLnDbaAXYiQ3qBYUL7

2. Because I have installed the University Hub Pro Child so from now on I will use this theme right (instead of UHP) ? And if in the future, UHP updates the themes, so will be my current UHP-Child be updated ?

3. Could I create searchform.php directly in UHP folder instead of creating new UHP-child ? (that means I change directly in the current UHP without making any child them)

Hope to receive your feedback about each point above.
Best regards.

Hi, thanks for your reply. I have installed the wp-child-theme-generator pluggin as you guided, and create a new child theme and I see that “Active: University Hub Pro Child” already. See this screenshot below:
https://drive.google.com/open?id=10dg0wxrCT-QfLlE3rbWFEFXmclKsDeFi

So in my Thieme there are two different:
University Hub Pro: Not Activate
University Hub Pro Child: Activate

So am I in correct way till this step ?

And could you guide me more details how and where to create “searchform.php” as you said ? Sorry for bother you because I have no experience in this before.

Regards