Let me give you step by Step instructions.
The Above snap is after you install via this menu which highlighted in the snap. Which show the app in the list of add approved wd list of apps that can be installed.
Once you install it. It will show the configure button which will redirect to server app of this software running in your nas itself which will keep scanning the entire or selective watch folder’s for new files and categorize into the respective types.
Step1: After the app install and you have to turn on by sliding the button.
Step 2: Click on the configure which will redirect to server.
Step3: You will be prompted for login via already created account or register for new account.
step4 : configure the account with folder and sync frequency for checking new files.
Once you are done with the setup process.
you will be presented with this page for you to search files.
The best part of search function is it can do meta search ie even in document or pdf it can hightlight the word you wanted to find. if the file naming is not conventional.