Put your files into a folder. Select the folder & go to properties to find the exact directory location (if you're not sure.) Then within LW, go to the menu Tools>Options>Sharing & press the add button & direct it to where your folder to share is. Select it & press apply button. Or you can type in the directory location in instead.

Another way to do it is go to LW's Library window by selecting the Library tab, then go to menu File>Add Folder to Share & direct it to where your folder is to share.

If the files inside the folder are red when viewed from the library window then press the Refresh button. Files in black are ones being shared. Ones in red are not being shared.

Within the library window select this newly added folder & look to the columns to the right. Under the upload & hits columns will tell you if your files have been uploaded or found in searches during that session.