The glowing effect is applied to all spots under a time based Category. The glowing effect is activated when a spot date / time is within the value you have set in settings at the “spot glowing effect duration” section. If the spot is created or modified outside of that value it will not glow unless you select the orange time clock which will change the time to current UTC. The glowing effect duration is determined by the user. The glowing duration applies to all spots once set.
To change the glowing effect for spots, go to your User icon drop down menu. Select Settings. A new box will appear on the right hand side of the screen. Move to the “spots glowing effect duration” section. You can change the duration from zero (0) (turned off) to any number of hours you may need. The duration is realised in real time hours. When done be sure to select the “Update” button at the bottom of the box.