How to mark an answer as solved?

What I’m trying to do:
I would like to mark an answer to my question as the solution.

What I’ve tried and what’s not working:
In my “Profile → Activity” there is the following text:
You haven’t solved any topics yet. When you provide a helpful reply to a topic, your reply might be selected as the solution by the topic owner or staff.
I just don’t see, how to do this. Sorry.

A search in the forum shows me the following post on this topic from 2019:
A simple way to mark Forum topics as [SOLVED]. With the note: ‘Solved in mid 2019’.

How can I (as topic owner) mark an answer as “[SOLVED]” my problem, so that the green tick can be set? Have I overlooked something?

By the way: Thank you very much for all the questions, answers and patience in this forum! This is really great and helps on the journey with Anvil.

Check out the footer of this reply. You may need to click the “…” in the footer to see it.

@p.colbert: Thank you very much for your fast reply!

At first I didn’t want to believe it. :face_with_spiral_eyes:
Here I see the three clickable dots.

But in the following post, where I wanted to mark Stucorks’s answer as the solution, I can’t find this option?!
Link: Error in Example: Admin Dashboard Template

Here is the screenshot:

Why can’t I see the three dots here?
Thank you for your help!

Only Q&A topics have solutions. Bug report topics don’t have solutions.