'individually-managed' originates from the combination of 'individual' and 'manage', where 'individual' comes from Latin 'individuus' meaning 'indivisible', and 'manage' comes from Italian 'maneggiare' meaning 'to handle'.

'individually-managed' evolved from the combination of 'individual' and 'manage', which were used separately in Middle English and later combined in modern English.

Initially, 'individual' meant 'indivisible', and 'manage' meant 'to handle'. Over time, 'individually-managed' evolved to mean 'managed by a single person or entity'.