To change projects with the Individaul Screen. Click on "File" in the upper left of the UFT screen. This will give a drop down menue. From this you can do many things. At the bottom of the list is the Projects you have used in the past, up to four. Click on the one not in use and it will replace on the screen the project in use.
To Backup a project, click on "Save As". This next screen will give you options for different actions. Selections are made with the "Save file as type" field. Click on the down arrow and select "Backup". Now you need to have a floppy in the floppy drive then click on the downarrow in the drives field and select "A" or the letter of your floppy drive. Next you need to name the file. Use a name like (P)roject name, the date, and a letter for the version of the day. Such as P030327a. Note the "*" must be removed from the name field or the backup will not work.
Instead of backing up to a floppy, make a backup folder in UFT and backup to this folder. Save several days worth of backups, the reason for using the date method of names. You then can burn these backups to a CD if you have one.