You must configure the page size in the contructor of the GridServer object in the server project to enable paging:
IGridServer<Order> server = new GridServer<>(em, Order.class, request.getParameterMap(), columns, 10);pageSize is an optional parameter of the GridServer constructor. If you don't want to enable paging you must call the contructor with no parameter:
IGridServer<Order> server = new GridServer<Order>(em, Order.class, request.getParameterMap(), columns);No configuration for paging is required on the client project.