Apple ID multiple devise log in

Hi Guys,

I hope you can help me.

My daughter has an iPad Mini 32gb. She live with mummy. I see her every other weekend and have just bought her an IPad Pro to use here.

im aware she can use her Apple ID with the new IPad.

my query is, will I have to log her in every time on my iPad every time she comes to mine, and get mummy to log her out of hers?

or can I log in to both devices and use mine when she’s here, and here when she’s there without multiple sign ins etc?

essentially - Both Devices Signed in all the time?

sorry if that was long winded..

thanks for your help