Dismissing someone is a worry for the parents when it comes to this issue (7,2)

I believe the answer is:

letting go

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'dismissing' is the definition.
Although both the answer and definition are present participle verbs, I cannot see how they can define each other.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for letting go that I've seen before include "Relinquishing one's grip" , "firing" , "Releasing hold" , "Got tingle, so releasing" , "Making redundant" .)

I've seen this clue in the Irish Times.

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