I am not sure how to place my ReadyNas NV+ in user mode? Any suggestions.
Sure. There are 3 major steps: 1) Change Mode 2) Create a User for you to access the NAS 3) Fix permissions so that new user account has full access to the data, as before. Afterwards you may wish to take step 4) create other user accounts and give them permissions that may be the same or different from your own user account. These are the accounts your friends, colleagues, family would use
Step 1) Load Frontview and then go to Security -> Security Mode in the left menu. this should present you with a window that has 3 major options for the Security mode: Share, User & Domain. You should change the option from Share to User, and if necessary complete the "workgroup" option, keeping it the same as you had in share mode. Then press the Apply button (bottom right)
Step 2) Go to the Frontview menu Security -> Users & Group Accounts. This will load a window where you can add your new user account. Select the "Add User" tab and add one account entering a username of your choice (eg "paul"), your email address, and a password, leaving the other options alone. There are no restrictions on the characters you can use in the password or the length. And then again apply your changes with the button in the bottom right.
Step 3) Because of the mode change, the permissions on your files are likely to be in appropriate and could give you access issues. To pre-empt this, in Frontview go to Shares -> Share Listing and select the protocol icon for your first share (I guess you're using AFP?) When the AFP options window has loaded, to the right is a tab called "Advanced Options". Select that and in the new tab, change the options so that they look exactly as in the following image and then press apply

You need to repeat the above for each of your shares.
Once done - you should be set to reconnect your mac.
First make sure you fully disconnect from the NAS, then re-select it in the finder sidebar. In the main window of finder, to the upper right, should be a button "Connect As..." Click on that and then enter your username and password that you setup in Step 2 above. If all goes well, you should see all your shares and be able to access them.
First time I've written this process up, so I may have made a mistake - post back if you have trouble and I'm sure we can get you through it.
Afterwards you may wish to have a look at
this document for the Step 4 I mentioned - it is a good overview of how to setup permissions for multiple users (should you need to) that was written by another user on the forum. May also be useful just to fine tune your own access too.