assist /əˈsɪst/
(v) to help someone to do something
Example: Bonnie hired a secretary to assist her with the many details of the event

coordinate /kəʊˈɔːdɪneɪt/
(v) to organize the different parts of an activity and the people involved in it so that it works well
Example: Benet tried to coordinate all departments to make sure the event ran smoothly

dimension /daɪˈmenʃn/
(n)  a measurement in space, for example the height, width, or length of something
Example: What are the dimensions of the ballroom?

exact /ɪɡˈzækt/
(adj) correct in every detail
Example: We will need an exact head count by noon tomorrow

general /ˈdʒenrəl/
(adj) affecting all or most people, places, or things
Example: We have a general idea of how many guests will attend

ideally /aɪˈdiːəli/
(adj) perfect; most suitable
Example: Ideally, the location for the concert would have plenty of parking

lead time
lead time /ˈliːd taɪm/
(n) the time between starting and completing a production process
Example: The lead time for reservations is unrealistic

plan /plæn/
(v) to make detailed arrangements for something you want to do in the future
Example: Planning their wedding was a source of tension for the young couple

proximity /prɒkˈsɪməti/
the state of being near someone or something in distance or time
Example: The fans were worried by the proximity of the storm clouds

regulate /ˈreɡjuleɪt/
(v) to control something by means of rules
Example: The activities of credit companies are regulated by law.

site /saɪt/
(n) a place where a building, town, etc. was, is, or will be located
Example: Once we saw the site, we knew it would be perfect for the event

stage /steɪdʒ/
(n) a period or state that something or someone passes through while developing or making progress
Example: A historic house can be the perfect site to stage a small reception