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We have prepared the sample to customize the end date picker and occurrence numeric value which can be viewed from the below link.
<Code>
$("#RecurrenceEditor").ejRecurrenceEditor({
selectedRecurrenceType: 2,
create: "oncreate",
change: function (args) {
this.element.find("#endsonuntil").find("#" + this._id + "_daily").ejDatePicker("option", { value: ej.format(new Date(2017, 6, 27), this._datepattern(), this.model.locale) });
this.element.find("#endsonuntil").find("#" + this._id + "_daily").ejDatePicker({ readOnly: true });
this.element.find(".recurcount").ejNumericTextbox({ value: 5, readOnly: true });
}
});
</Code>
Note: Above sample is made in JS platform for your reference.
Regards,
Karthigeyan