How do I get user workflow "Application as the manifest repository" working in SES?

[DBT]

I'm new to the nRF5340 and zephyr and ncs, but I have gone through the tutorial series 

We're developing a product that will use the SPIS peripheral on the nRF5340 and I have a few nRF5340-PDK boards

Since I haven't found any SPIS sample projects, I started with the zephyr adxl372 sensor sample project.

The sample project is basically working (wiggling pins as expected), and now I want to create my own sensor and change it to SPIS.

I want to do this without changing the files in my installation of ncs, so I thought I should use what is explained in part 2 of the tutorial, section 2.1.2 User workflow - Application as the manifest repository

https://devzone.nordicsemi.com/nordic/nrf-connect-sdk-guides/b/getting-started/posts/nrf-connect-sdk-tutorial---part-2-1478313418

I figured that in SES I would still use File > Open nRF Connect SDK Project, but I should point the board directory to my copy of zephyr for the project:

But when I click OK I get this alert

Then this error

Is there a better way to do this?

[Martin Lesund]

Hi Douglas,
Please try to go into Segger and change the Env. Options to what suits your environment:
*
Remember that you need to run 'west update' inside your maniffest repo so it can read the west.yml file and set up the env. correctly.

[DBT]

That seemed to work.

The specifics of how to get to that menu in SES are Tools > Options > nRF Connect > Directories group