I haven't been able to find answer, so here goes.

I have a protected sheet with three (3) unlocked cells. As I tab /
Shft-Tab I can move between the three cells.

Question: How do I get the Tab to stop when it gets to the last
unlocked cell? How do I get Shft-tab to stop when it gets to the
first unlocked cell?

When in the last cell, F12 for example, pressing tab takes me back to
B3. How do I get tab to stop once I get to F12, and Shft-tab to stop
once I am at B3?

I have asked the same question worded several different ways to try
and clarify what I am trying to accomplish. Any Ideas?

Thanks in advance,

bnhcomputing