Tick includes oddly lumped part payment (10)

I believe the answer is:

instalment

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'part payment' is the definition.
'instalment' can be an answer for 'payment' (I've seen this before). I am not sure about the 'part' bit.

'tick includes oddly lumped' is the wordplay.
'tick' becomes 'instant' (both can mean a short amount of time).
'includes' is an insertion indicator.
'oddly' indicates alternate letters (letters in odd-numbered positions).
The alternating letters of 'lumped' are 'lme'.
'instant' placed around 'lme' is 'INSTALMENT'.

Can you help me to learn more?

(Other definitions for instalment that I've seen before include "Payment of part of debt" , "One of a series of partial payments" , "episode" , "Chapter" , "part of serial" .)

I've seen this clue in The Telegraph.

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