Taking someone on of attractive disposition (8)
I believe the answer is:
engaging
'taking' is the definition.
('engage' can be a synonym of 'take')
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for engaging that I've seen before include "Appealing to others" , "Fighting - winning" , "coming into battle" , "procedure that involves acceptance of 1 [PROPOSAL]" , "Taking part" .)