A date range (unix timestamp) must have from and to arguments specified or can take "now" instead of a unix timestamp. You can also set either from or to together with "gap" to specify the one relatively to the other.
On this #tikiexpresstutorial, using #tiki19 I’ll show you:
How to enable a feature from the Control Panels
How to enable a Global Feature from the features panel
How to enable an Interface feature
A quick overview of the Programmer features
And where to look for feature options