At the start of the week, I find it facilitates communication (4)
I believe the answer is:
wifi
'it facilitates communication' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'at the start of the week i' is the wordplay.
'at' says to put letters next to each other.
'the start of' becomes 'if' (I can't justify this - if you can you should give a lot more credence to this answer).
'the week' becomes 'w' (abbreviation).
'if' after 'w' is 'wif'.
'wif'+'i'='WIFI'
'find' acts as a link.
Can you help me to learn more?
(Other definitions for wifi that I've seen before include "method of transmission" , "Local area network that uses high frequency radio signals to transmit and receive" , "internet access" .)