Training an Adult Dog to Use a Pee Pad?

My dog is 5 years old. She is actually an outside dog because my sister is allergic. However, recently because of my management office I have to put her inside the house. My dog has no experience in pooping and peeing on a pee pad. I tried putting a bit of pee to attract her, but its not working. I put her in a small room with her pee pad and bed, but she refuses to go and only goes in the house when I let her to play with. How do I get her to poo and pee on the pee pad?

By Kim