Why does Schedule Scan screen not have NEXT button?

Trying to schedule a Smart Scan.  The Instructions say to

1) Open MY NORTON

2) Open DEVICE SECURITY

3) Open SCANS > Scans and Tasks > Custom Scans

4) Click GO

5) In the EDIT SCAN window, Choose your scan type, click EDIT SCAN

6) Select interval and timing options, along with Run the Scan options

7) Click NEXT, and in SCAN OPTIONS window, click SAVE.

Here's where it goes wrong.  In the EDIT SCANS window, after I have selected a scan interval and made sure the boxes are checked under RUN THE SCAN, I am given two choices:  CANCEL and SAVE--and SAVE is greyed out.  There is no NEXT button.

A picture of the EDIT SCAN screen is attached.  Help.

Windows 11

Norton 360 Deluxe (I am unable to find info on which version I am running without spending the rest of the afternoon searching the internet for a HOW TO on this subject also).