Currently we can create tab menu items with sheets under it. It would be great to be able to create subtab to better structure and manage the sheets. Tab 1. - Subtab 1.1. - Sheet a - Sheet b - Sheet c - Subtab 1.2. - Sheet a Tab 2. - Subtab 2.1. - Sheet a - Sheet b - Sheet c - Subtab 2.2. - Sheet a
Under Tab 1, Sub Tab 1-1 and Sub tab 1-2 are under Tab 1 and can be set to show reference sheet from other forms.