Obs controls which are associated to concepts that have datatype as 'Datetime' will be rendered as DateTime component.
The DateTIme components exist in two modes - Designer and RunTime mode.
DateTime designer control is the one that gets displayed on implementer interface when an Obs Control is associated to a concept with datatype 'Datetime'.
Concept "Datetime" is of type Datetime. Obs control associated to this concept will be rendered and displayed as "DateTime Control"
On the left pane, you will be able to see properties relevant to DateTime control (and Obs Control) and can select or unselect them.
More information about properties can be found in Configuring Properties.
In runtime mode, Text box Control is rendered with all the properties that were saved during design time. The properties can't be edited in this mode. Runtime DateTime Control is rendered in the observation forms (templates) on Bahmni. Observations can be captured for the concepts associated to these controls.