TPC has great tools that let you work with station/offset to define points just like using X/Y coordinates.
Choose an alignment and create a point at a specific station and offset. Or, start with a point somewhere in the project and have TPC create it's equivalent station/offset based on any alignment or baseline.
Entering Stations
Creating Station Offsets
Creating Stations at Intervals
Entering Stations and Equations
Creating Offsets to an Alignment
Creating a Station/Offset Report