Form is the graphical container where other controls can be added to make user input logical and meaningful in Excel.
Here are the key controls
Label – To add label to the form
Textbox – To receive text input from user
ComboBox – Combination of Listbox and Textbox
ListBox – Let user pick an option from a list.
Checkbox – Receives input in check click
Optionbutton – Radio button input
ToggleButton – Let user enter Yes/No, True/False etc.
Frame – Can be used to make Optionbutton mutually exclusive
There are many more Controls. You can also add more controls to control toolbox. Each control is equipped with large number of properties to change look and feel of the control.