OurCal's calendar shows all your events together in a single, vertically scrolling view — differentiated by calendar colour and the colours of scheduled members.
To focus on specific people, tap the filter icon in the bottom right of the calendar screen to open the Filters view.

From here you can filter by members, calendars, or both:
Tap "Unselect All" under the Calendars section so no calendars are ticked. Then select only the members whose events you want to see.
Tap "Unselect All" under the Members section so no members are ticked. Then select only the calendars you want to see.
Select the calendars and members you want, then tap the "or" dropdown to choose your filter mode. "Or" shows events that match either the selected calendars or the selected members. "And" shows only events that match both — e.g. events in the "Kids" calendar that are also assigned to "Annie".
Tap the tick in the top right to apply your filters.