We have just got the new release where we can override Standard Action New and Edit. Here is the link: https://releasenotes.docs.salesforce.com/en-us/summer20/release-notes/rn_networks_override_standard_actions.htm But In Salesforce there is no direct way to override standard Detail and recently we came in the situation where we needed to implement it. So we found a workaround to achieve it by the facility provided by the Salesforce Communities. Special thanks to "Nisar Ahmed" who helped me to find this solution. We need to follow the steps if we want to override Actions/Buttons with the custom component in the Community. Following is an example of override view/detail page: Create a Component which we want to override. For e.g. Contact And we should have this variable: @api recordId. And now go to the page and create and create a design attribute in your meta.xml file. <targetConfigs> <targetConfig targets="lightningCommuni