Hi compuquak
We don't have a step-by-step manual or a video for that now. But we plan to improve this in the future.
At this time, the best way you have to learn how Multi-Inventory works is by reading our documentation. But, please note that this is only for ATUM and its add-ons, not for WooCommerce.
If you need to learn how to use WooCommerce too, you can read the WooCommerce docs too.
For the ATUM free plugin documentation, please go here:
https://stockmanagementlabs.crunch.help/en/atum-core
For the Multi-Inventory documentation, please go here:
https://stockmanagementlabs.crunch.help/en/atum-multi-inventory
And you can find the WooCommerce docs here:
https://woocommerce.com/documentation/woocommerce/
If after reading the docs, you have further questions, please let me know 😉
Best Regards,
Salva.