How to select/remove topics?

[SmokyLittleBeefBath]

Hi, can anybody help me please? I know there's a way to set preferences of topic subjects that I see in "Active" but I can't remember how. I set my preferences a couple of years ago, now some of those topics are irrelevant to me and I'd like to stop seeing them.
Any help please?

On a laptop version its Talk scroll down arrow by Customise Manage Hidden Topics and Threads.

@Silkieschickens

Thank you for responding. I should have mentioned that I only have a tablet & phone.

When I click on the drop down menu from Talk I get options to customise my preferences about notifications, but not topics or threads.

This is what I get......

.....

I have a feeling you have to be on desktop version to be able to do it but you can get that on a tablet.

Do you know how? I don't use the app, I use www.munsnet.com, do you know if I can do it if I get the app?
I've done it before, on this tablet, but can't remember or find out how