This tutorial will show how to place GCPs with Reach units.
If you have 2 Reach RS/RS+, this video will guide you on how to set them up in RTK:
Setting RTK on Reach rover over NTRIP
If you have just one Reach receiver, you need to connect it to NTRIP first. Check this guide for more details
Create a project in the ReachView 3 app using the Survey tool.
Put your pole in the center of the target.
Level your pole using a bubble level.
The video below covers the process of collecting points using the ReachView 3 app.
The video below covers the process of exporting data using the ReachView 3 app.