Stand on this, maybe, and see more? Yes, now encroaching heads shifted (8)
I believe the answer is:
ceremony
'stand on this maybe' is the definition.
(to 'stand on ceremony' is to insist on formalities)
'see more? yes now encroaching heads shifted' is the wordplay.
'see' becomes 'C' (the word for the letter, according to Chambers).
'heads' indicates taking the first letters.
'shifted' is an anagram indicator.
The initial letters of 'yes now encroaching' is 'yne'.
'more'+'yne'='moreyne'
'moreyne' is an anagram of 'eremony'.
'c'+'eremony'='CEREMONY'
'and' is the link.
(Other definitions for ceremony that I've seen before include "Event of ritual significance" , "Religious rite" , "Pomp, formality" , "the formal stand on?" , "Possibly a parade" .)