Connect your iPad via cable to your MacBook.
Launch macOS built-in QuickTime Player.app
Go to File menu → New Movie Recording or use the keyboard shortcut Option + Command + N
This would open a Quick Time window with the MacBooks camera turned on.
Click on the arrow besides the red circular Record button and select your iPad for Camera.
This would show the ...
You can do this either way, you can use your account or your child's, but the steps to take to set up Screen Time will vary depending on which one you use.
It sounds like the iPad is for your child to use primarily, in which case I would recommend using his/her account, since it makes it more streamlined and intuitive to use the parental management features....
I just googled your mixer and it appears that this device doesn't have a USB-Interface to get a digital signal of the mixer's output.
You need a digital audio interface like the Behringer U-Phoria UMC204HD. You can then plug your mixer into the audio interface and connect the audio interface to the iPad Pro using a USB-Adapter.
Well, it was sort of a mystery.
I'm not really sure which of my actions produced desired effect.
I copied a lot of files to iPad using the same "On My iPad" application to completely use up all available space. Then I deleted them via the Settings - Storage and also via the "On My iPad" app (where I could see the files going into the "Recently Deleted" ...
Make sure that iCloud backup is turned on.
(Settings -> tap on your name at top -> tap on iCloud -> tap on iCloud backup -> turn on.
iPad will now automatically back up daily when the screen is locked, wifi is on, and iPad plugged into power.
You can also backup manually from this screen by tapping backup now to iCloud.
If you don't have enough storage ...
You cannot remove that grey bar because it's an area of the virtual toolbar with additional tools that will appear like Undo/Redo, Cut, Copy, and Paste. The "up and down arrows" is like hitting Tab and ShiftTab to cycle between fields on the webpage. It usually doesn't show unless there are fields to navigate or items in the clipboard.
It appears in ...
There is a way to delete old backups in Catalina, it's just in a really weird area. From the menu go to "About This Mac", then to the "Storage" tab, click on the "Manage ..." button and then click on the "iOS Files" item in the sidebar. (Credit to this site https://www.howtogeek.com/665890/how-to-delete-iphone-and-ipad-backups-on-a-mac/. They also have ...