There are a few things you need to do -
1. Give the accountant role "Publish" capability for the native WP Post type in Toolset > Access Control > Post Types > Posts
2. Also give them "Publish" capability for the Orders post type from Post Types > Orders.
3. Activate the following permissions in Toolset > Access Control > Custom Roles > Accountant > Change permissions:
- Woocommerce tab - "manage_woocommerce"
- Other capabilities tab - "level 0", "publish_shop_orders", "read", "read_shop_orders"
This should open up the Order screen for them to use. Let me know if that isn't a satisfactory solution and I can take another look.
As Christian is currently on vacation i'll be having a look at this ticket.
I checked on this for you and their isn't a way to do this because woocommerce gives its settings page a permission called "manage_woocommerce" so we are not able to use access to disable the individual settings in woocommerce.