Child’s Apple ID Support

From: Require a password for App Store and iTunes purchases - Apple Support

About turning off password protection

- You can't completely turn off password protection for paid items on your iPhone, iPad, or computer. On Apple TV, you can turn off password protection for both free and paid items.

- If you enabled Touch ID or Face ID for App Store and iTunes Store purchases, you'll be asked to use Touch ID or Face ID for every download, even if the item is free.

Feedback for Apple to: Product Feedback - Apple

I came looking for the answer for this too, but I just find other people asking the same question but no working answers.

When I try and install an app on my daughters iPad it makes me

1) Enter her password

2) Enter her password a second time

3) Ask permission

4) Give permission on my device

5) Enter her password a third time.

This has clearly been going on for many years I can see people asking about it going back to at least 2019. Not sure why this hasn't been sorted it's a pretty shoddy experience.

gazw89 wrote:

it's a pretty shoddy experience.

If you think it is shoddy then tell Apple using the feedback link I provided a year ago. The people on this forum are just customers like you.