Everyone can read. Filing is limited.
Anyone on your team can ask about any document. Only some people can replace a given document.
Everyone can look up the safety policy. Only the people who look after safety can change it. That keeps the answers consistent without hiding anything.
Two different limits
If you cannot file into a department, one of two things is true. The message tells you which.
It is not part of your plan.
[Department] is not part of your plan, so documents cannot be filed there yet.
This is about your subscription, not about you. Nobody at your company can file there yet. Contact support to add it.
Another team looks after it.
[Department] is looked after by another team, so you cannot file into it.
This is about your role. Send the document to the person who owns that section, or ask your administrator to give you access.
If nothing has been set
If no limits have been set, everyone can file into every department in your plan.
Changing who can file where
Contact support with the name of the person and the departments they should file into.