The global system functions, such as pickList() and pickUser(), allow developers to build various lookups displaying a list of custom options. Besides that, the standard Dynamics 365 for Finance and Operations application contains a few more useful functions, allowing us to build more complex lookups of custom options.
One of the custom functions is called selectSingle(), and it provides the user with a list of options. It also displays a checkbox next to each option that allows users to select the option. To demonstrate this, we will create a new class that shows the usage of these functions.
