If you use the “Secure Link” function, you can give your clients or third parties a link to your gallery from the address with the exact structure of your folder and the gallery structure will not be visible.
For example, www.picdrop.com/photograph/client/project/shooting would appear as www.picdrop.com/photograph/PQd4HQ
Someone who only knows this shortened, secure address and has bad intentions cannot simply find out the addresses of your other galleries by analyzing or trying them out.
Of course, you should always protect your galleries with a password that only you and your client know. You can enter it under “Gallery Settings” and select “Gallery Password”. If the item “View sub-galleries” is activated in the parent gallery, your client can, of course, continue to navigate via the navigation on the left side and continue to access parent folders etc..