Not so simple two stage mutli.
At WP1 find a plaque (in the sidewalk) that has information about the creator of the fictional character Tarzan.
There are four years mentioned on the plaque. The oldest is 1875 the newest is 1950.
Place the years in chronological order - oldest to newest. Now label them (for the sake of
the hint) A, B, C, D. With A being the oldest and D being the most recent.
And now the fun part. You need to add three of the years together to come up with a new
number and input that number into Certitude. Heres the rub... Do you add A plus B plus
C? or is it A pluc B plus D? or?
NOTE: Each year is only used once. So A+B+C or B+C+D, etc. Not A+B+B, or B+B+C, etc.
If you've followed instructions AND the clue works for you - maybe you'll get it on the first
try. Regardless it should not take you more than four tries. If it does - you're doing something
wrong.
Bring your own writing tool
Note how built in TOTT / leash is positioned. This, hopefully, will make it less visible to muggles. Please try to return the container in the same way.
Congratulations to w01f for FTF!

You can validate your puzzle solution with certitude.