Reflecting Modules

Anyone knows what are (and where to find the reference) of the criteria on how you can reflect successfully the module on the sidebar?

I have a user with a role as employee only. And would like to allow the Employee role to the doctypes of the HR and the Tools. However, I cannot reflect the Tools on the list of modules.


Upon checking, the doctypes that are on the Tools are under the Desk module so I allowed the Employee Role with a Desk Module. But still the Tools doesn’t appear.