How can RNAV 1, RNAV 2, RNP 1 and RNP 2 routes be modified by pilots?

Question

Answer

Manually, by inserting the geographical coordinates, in response to an ATC clearance.

Answer

By deleting or inserting waypoints in the navigation database or manually by inserting rho/theta values of thenew waypoint.

Answer

Manually, by inserting range and bearing to a new waypoint, in response to an ATC clearance.

Answer

By inserting or deleting waypoints in the database, in response to an ATC clearance.

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