Time Increments
If there is only one time increment chosen for all Resources (such as 10 min) then only one time column will display on the Calendar.
For time to appear on every column:
Go to the Settings Tab.
Select the box for Always Show Time. This is user specific.
The Calendar display will show the time on all columns.
If different time increments are chosen for Resources, and they are displayed together on the Calendar, the time will be on all columns for all Resources.