Hi, @Solotony, I can confirm this isn’t a feature. We can create timeline events — Timeline Events API, but it is not possible to set the timeline filters in the manner you want.
If you have a moment, adding your suggestion to the Ideas Community and getting some upvotes will be very helpful in getting your suggestion in front of the Product team. If you add a link back to your Idea post, I’ll be sure to give it an upvote to help get the ball rolling.
Best,
Jaycee