The reason why the Access Dimensions end user is not able to see any of the menu options in Dimensions Cloud is because Dimensions cloud doesn't support levels. If the end user is set up with a profile in Dimensions with no levels set, then they will be able to see the menu option in Dimensions Cloud.
Levels can be checked against a profile in Dimensions by going to the required profile in Dimensions and under the Sales Ledger option for example and the Records option, there will be a Client option, that needs to be blank in the Enter/Amend and Work With field on the bottom left hand corner of the Security Profile screen.