To filter out some activities, click the down arrow next to the word "Agenda" on the upper right of the calendar then uncheck boxes of category of events you do not wish to see displayed. On top left of calendar, you will see the word "Today", left and right arrows, and month or week being displayed.  Use the arrows to advance to desired time frame, click the word "Today" to quickly return to time period containing today's events. On top right of calendar, click on word "Week" to see just the view to only a week or "Month" to see all events for month indicated.