Should I use a seperate Apple ID for my business?

I am setting up my shops iPad and I was wondering if I should create a seperate Apple ID for the purpose of keeping all my private files off the work iPad.

Would this be the best option or can I set the iPad with my current Apple ID and set restrictions?

Will the staff members that have access to the IPad be able to turn on my iCloud and access my private files?

Thank you :)