Check the will to see if the person who has died has given any instructions for their funeral. It is generally up to the executor or next of kin to decide whether to have a cremation or burial. The executor does not have to follow the instructions left in the will about the funeral.
The funeral director will help you to decide where the body should stay until the funeral, and when and where the funeral should take place.
If there is going to be a service or ceremony, you should contact a minister for the religion or belief of the person who has died. If you are not sure, the funeral director should be able to help you.