Users become able to see a module when the Role they have been assigned is granted the permission to view that Module.

Procedure

1. Click on the Modules tab. 
2. Click on the name of the Module you would like to allow Users to view. 
3. Click on the Permissions tab. 
4. Click on the Pencil Icon to the left of Can View. 
5. Check the boxes of the Role(s) you've assigned to users you wish to view this module. 
6. Press OK. 
7. Refresh the page and check to make sure the Roles you wanted to make able to view this module are selected.