occupancy

[Igor Djerdj]

Dear all,
The following question is addressed more to FULLPROF users. I want to refine 
atomic occupancies of Fe-doped TiO2 for instance. Assuming that Ti is 
substituted with Fe at some sites, how can I provide that the sum of 
occupancies of Fe and Ti is 1 or 100%?
Regards,
Igor Djerdj