Can't move my Dropbox folder to another drive

I'm pretty sure that what I want t odo is simple and straightforward but I'm really struggling to be clear on terminology and 'computer speak'. I've searched hundreds of posts here and all seem to give me part answers but I'm scared to follow the solutions because I'm not sure about the other parts. In essence, I'm worried that getting dropbox to point to my existing files on E: drive will overwrite E: drive folders with what is on the dropbox server/cloud and I need it the other way around....I need to KEEP files on E: drive and copy/sync/write them to Dropbox cloud/server.

So...

I've had dropbox for years but a week ago it was either uninstalled or otherwise disappeared.

Ths morning I followed Support advice to

https://www.dropboxforum.com/t5/Desktop-client-builds/bd-p/101003016 and downloaded/installed Stable version 28.4.14.

I was led to understand that at some stage through the install it would ask me where I wanted it to 'point' to find my existing 'dropbox folder' where I store all the files I want to sync/share but it just installed itself into C:/program files (x86). (That's ok with me....what would I know??) but it then seems to have loaded all the files that were on the Dropbox Server/Cloud thingie back to my computer to C:\Users\(my name)\Dropbox.

I gather it should be a pretty simple exercise to:-

Right click on the Dropbox icon in System Tray (bottom right corner beside Clock/Date)

Left click on the Gear cog to open Settings

Click Preferences

Click Account

Click 'move' beside Location and simply

Point to E:\Data\Dropbox.

3 questions then:-

1. Is this correct?

2. How do I make sure it sends the files from my E: drive to the cloud/server thingie instead of sending what's already in the cloud/server thingie to my E: thereby deleting or overwriting what's in the E: Drive?

(or...am I better off un-installing Dropbox again and finding some way to interupt it's re-installation so it will point to the E:\Data\Dropbox?)

3. I understand from other posts that it will create a folder called 'dropbox' inside my existing E:\Data\Dropbox. If this is true, can I simply pick up all of the folders and files inside this new 'dropbox' and drop them one level up the tree into the old, existing 'dropbox'?

I've got lots of other questions about terminology but I'll take this one step at a time.

Thanks

Chris