Pay for seating (6)
I believe the answer is:
settle
This might be a double definition.
'pay for' is the first definition.
(I've seen this before)
'seating' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for settle that I've seen before include "Become established, make one's home" , "near Giggleswick" , "Become resident" , "Bring to an end, agree terms" , "Make home, put down roots" .)