Ambitus not in the beginning

[Dr. med. Kai Lautenschläger]

Dear list,

sorry to ask again and I hope this time it will not be something obviously 
explained in the manual. Is there a way to insert ambitus at the beginning of a 
staff, that is not the first staff of the score?

A piece I am doing starts of with solo voice and organ and later the choir sets 
in with the solo staff being taken over by the tenors. I would like to add an 
ambitus in each choir voice, when it first appears (the empty lines in the 
first two systems before are not shown). 

The change between soloist and tenors appears more often within the piece and 
unfortunately not always at line break points. It would be acceptable (for this 
piece) for the ambitus to take into account both solo and tenor notes. 

I’m grateful for any idea.

Kai