I have an org with Person Accounts enabled. Having an object with a lookup relationship on Accounts, is it possible to add Person Accounts in this field?
Its a same Account Object only the Type of Account is different. So you can select a person account in an Account lookup field.
PersonAccount is having 2 records 1 Account, 1 Contact, the fields exposed for that record depend how you are using it. If you are using it in a Lookup(Account), you will see the Account fields. If you are using it in a Lookup(Contact), you will see the Contact fields.