Subforms are wonderful for keeping a lot of related data together. They allow you to duplicate functionality across multiple forms, and also to pull data from different tables without the trouble of joining them in queries. Another function, which may seem incidental at first, is the ability to show, hide, enable, and disable a group of controls simply by setting the value on the subform control.
Once you become comfortable with using subforms, you may be tempted to create a subform just for the "incidental" purpose of grouping the controls. This practice, however, will quickly crowd your object explorer and clog up your system memory. Rather than using a subform, repurpose a tab control. Insert a tab control into your form and give it only one page. Then, set the "Style" property to "None." Now you have a page that behaves like a single-use subform: you can fill it with controls that you can move or hide at will, with a single command.
