I'm trying to copy leaveform as one of my applictions but th

I'm trying to copy leaveform as one of my applictions but th

I've been trying to add leaveform from creator.zoho.com/zoho1/leaveform but am unable to do so.
Can you please help me to do this. I have the 25$ business version so should be able to add as many apps as I want

regards,
Kristof
kbl