You really have two things to consider and account for when it comes to file sharing on any NTFS volume.
Share permissions as well as NTFS (security) permissions.
Both effectively impact the ability of a user to access a shared network resource, so...
For share permissions use net share
Open an elevated command prompt and type
net share /?
or google for net share examples.
For NTFS security permission use icacls
Open an elevated command prompt and type
icacls /?
or google for icacls examples
And remember on NTFS volumes, security permissions always combine with share permissions and the most restrictive permission is always applied. And when applying permissions explicitly to an individual user, that user's group membership's...