SugarCRM: Conditionally hide / show edit and delete button in subpanel

I have created a custom module and related it to the leads module. It has certain custom columns such as "Type", "Notes" and so on.

The "Type" column can have 2 values i.e. "Call" and "Auto".

I want to show / hide the edit and delete buttons based on the value in the Type column. What's the best way to do this?

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