Disable the option to "Dissociate"?

Disable the option to "Dissociate"?

On occasion when a new change is implemented that causes issues, we will associate those tickets with the applicable change from the "Requests" module: 


All of the associated tickets can then be viewed within the "Changes" module by clicking on the "Requests caused due to this change" #:

The problem we are running in to is that anyone can go into that change and "Dissociate" them - don't ask me why they do it! :(

Is it possible to disable the "Dissociate" button? Or limit this to only "Change Managers?

Thank you.

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