Share things out, as everybody may have to (5)
I believe the answer is:
allot
'share things out' is the definition.
'allot' can be an answer for 'share' (I've seen this before). I'm not sure about the 'things out' bit.
'everybody may have to' is the wordplay.
'everybody' becomes 'all' (I've seen this before).
'may have' says to put letters next to each other.
'to' becomes 'ot' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'all'+'ot'='ALLOT'
'as' acts as a link.
Can you help me to learn more?
(Other definitions for allot that I've seen before include "Apportion (something to someone)" , "Give as a share, or a task to be done" , "Ration" , "Dispense or distribute" , "Parcel out, assign" .)