Forms Tab order on serenity form - serenity-is/Serenity GitHub Wiki
For input controls, like textbox, textarea...
this.form.FirstName.element.attr("tabindex", 1);
this.form.LastName.element.attr("tabindex", 2);
this.form.Email.element.attr("tabindex", 3);
If control is dropdown which implemented by select2 library, try this:
this.setTabIndexSelect2(this.form.SupplierId.element, 4);
private setTabIndexSelect2(element: JQuery, tabIndex: number) {
element.prev("div.select2-container").find("input").attr("tabindex", tabIndex);
}
Original issue: https://github.com/volkanceylan/Serenity/issues/3935