# Group by on timeline fails if using lookup

**URL:** <https://community.fibery.io/t/group-by-on-timeline-fails-if-using-lookup/5858>\
**Category:** Bugs & Issues\
**Tags:** timeline-view\
**Created:** [February 16, 2024, 4:20am UTC](https://community.fibery.io/t/group-by-on-timeline-fails-if-using-lookup/5858 "2024-02-16T04:20:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Karlitooo](https://avatars.discourse-cdn.com/v4/letter/k/439d5e/32.png) [@Karlitooo](https://community.fibery.io/u/Karlitooo)\
**Post date:** [February 16, 2024, 4:20am UTC](https://community.fibery.io/t/group-by-on-timeline-fails-if-using-lookup/5858/1 "2024-02-16T04:20:51Z")

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Hello,  
Possibly an edge case but what can I say, _I’m an innovator_.

Thought it would be handy to have a timeline that showed the project dates grouped along with its related tasks underneath. So I created a dropdown field on project called grouptest. Then went into tasks and created a lookup field also called grouptest.

Went to timeline view, added both databases to the timeline, group by “grouptest” was visible but clicking on it did nothing. So it’s a buuuug I suppose? Not urgent to fix, just highlighting it FYI.

Cheerio

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**Author:** ![mdubakov](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/mdubakov/32/10_2.png) [@mdubakov](https://community.fibery.io/u/mdubakov)\
**Post date:** [February 16, 2024, 2:14pm UTC](https://community.fibery.io/t/group-by-on-timeline-fails-if-using-lookup/5858/2 "2024-02-16T14:14:57Z")

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Can you provide a screenshot of the timeline?

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**Author:** ![Karlitooo](https://avatars.discourse-cdn.com/v4/letter/k/439d5e/32.png) [@Karlitooo](https://community.fibery.io/u/Karlitooo)\
**Post date:** [February 21, 2024, 1:48am UTC](https://community.fibery.io/t/group-by-on-timeline-fails-if-using-lookup/5858/3 "2024-02-21T01:48:02Z")

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Hi Michael,  
Sorry about the delayed reply, haven’t checked in here for a few days!

Here’s a video showing what I was doing: [https://www.loom.com/share/b9b2c0a33cb649128b6b50a786d8c74e?sid=bd86c335-650e-44f5-a68f-70515b0f7476](https://www.loom.com/share/b9b2c0a33cb649128b6b50a786d8c74e?sid=bd86c335-650e-44f5-a68f-70515b0f7476)

Again, no rush for me on this - this was more of an experiment than a real need.

Cheers,  
Karl