Each user should have their own AppleID - and use their unique AppleID with their own devices.
As described, you’ll need to separate your digital identities, configuring a new AppleID if necessary.
How to create a new Apple ID – Apple Support
Next, for the iPad that you wish to transfer, properly prepare the iPad for use by a different user. This will ensure that the Activation Lock associated with your own AppleID is removed - and that no sensitive data (such as your Keychain) is inadvertently merged with the account of the new user:
What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support
After performing this procedure, you’ll be able to set-up the iPad “as new”. If you have not already created a new AppleID, you’ll have opportunity to do so during initial setup.
After separating your identities, you can selectively share purchased Apple Services, Subscriptions, Apps and Media using Apple’s Family Sharing features:
Family Sharing - Apple
Set up Family Sharing – Apple Support
Share App Store, iTunes Store and Apple Books purchases with Family Sharing – Apple Support
https://www.imore.com/how-set-up-family-sharing-iphone-ipad