If you want to try out the advanced web interface for Mastodon, I made short video on how to pin a hashtag search.

1. In Preferences, Enable advanced web interface and save.
2. Go Back to your Mastodon start page.
3. Search for #FediTips
4. Click search result
5. In the column that appears, open column settings (top right icon)
6. Select โ€œPinโ€ and the column will stay in your layout and update automatically
7. You can add more hashtags to the same column, if you want.

https://vimeo.com/768236701

@axbom I'm running the advanced interface but I'm not able to add additional hashtags to the column, any idea what the reason for that could be?
@Micke In this case I actually think that the hashtag must 'exist' on your instance before you can add it. Likely it's enough that somebody on the instance uses it.
@axbom yes, that makes me proud to be Swedish I tell you! ๐Ÿ‡ธ๐Ÿ‡ช