The default values for a newly created related Activity are set in the defQuickAddActivityValuePairs method in the QuickAddMixin schema (https://prnt.sc/r3k57j). Please feel free to override this method in the replacing client module for ActivityPageV2 in order to modify the functionality.

There is an example below:



define("ActivityPageV2", [], function() {

    return {

        entitySchemaName: "Activity",

        attributes: {},

        modules: /**SCHEMA_MODULES*/{}/**SCHEMA_MODULES*/,

        details: /**SCHEMA_DETAILS*/{}/**SCHEMA_DETAILS*/,

        businessRules: /**SCHEMA_BUSINESS_RULES*/{}/**SCHEMA_BUSINESS_RULES*/,

        methods: {

            

            defQuickAddActivityValuePairs: function() {

                var valuePairs = this.callParent(arguments);

                var newValuePairs = valuePairs.filter(item => item.name !== "Title");

                newValuePairs.push({

                            name: "Title",

                            value: "My new value"

                });

                return newValuePairs;

            }

        

        },

        dataModels: /**SCHEMA_DATA_MODELS*/{}/**SCHEMA_DATA_MODELS*/,

        diff: /**SCHEMA_DIFF*/[

        

        ]/**SCHEMA_DIFF*/

    };

});