You can override a standard action in both Salesforce Classic and Lightning
Experience. While the destination is the same, the navigation paths are
different.
You need at least one Lightning component in your org that implements the lightning:actionOverride interface. You can use a
custom component of your own, or a component from a managed package.
Go to the object management settings for the object with the action you plan to
override.
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Select Buttons, Links, and Actions.
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Select Edit for the action you want to override.
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For Override With, select Lightning Component
Bundle.
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From the drop-down menu, select the name of the Lightning component to use as
the action override.
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Select Save.