Set Dropdown to force Single or Multi selection

Currently, the Dropdown column seems to be set as a select one or more option. This is great in theory, as it make it up to the user to decide whether they want to select just one or many. But in use its a bit cumbersome. As it creates additional steps for the user when they want to change it from one thing to another. Rather than just selecting a different option and the selection being replaced. I need to now select another option, and then remove the previous selection.

Can we get the option to set a dropdown as a single select or multi-select type?