# Action with "many to ..." relationships **URL:** \ **Category:** Ask for Help\ **Created:** [June 22, 2022, 3:12pm UTC](https://community.glideapps.com/t/action-with-many-to-relationships/43373 "2022-06-22T15:12:42Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Berengere](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/berengere/32/38587_2.png) [@Berengere](https://community.glideapps.com/u/Berengere)\ **Post date:** [June 22, 2022, 3:12pm UTC](https://community.glideapps.com/t/action-with-many-to-relationships/43373/1 "2022-06-22T15:12:42Z")
Hello, I am facing a persistent problem… 🤯 I work directly on glide editor: **I have an Events table, a User table, an Event\_participant table.** **I would like a user to be able to subscribe or unsubscribe from an event.** My user is on the event page. When registering, with the “Add row” action, it’s create a new row in my “Event\_participant” sheet. However I have a real **problem to delete the line**. In fact, the “delete row” action does not allow you to delete a row in other sheet of your page (here Events). I tried to create relationships, but I notice that actions are possible with “one to …” relationships but not with “many to…” relationships. In desperation, I thought to myself that I would create a column for each potential participant. It’s not very pretty, but in my case I could limit registrations to 20 people. However, this solution gives me another problem: I would like to retrieve the participant’s ID in the Event table in one of the columns Part\_1, Part\_2,…Part\_20 depending on the first which will be empty. Do you have an idea ? Thanks ! ---
**Author:** ![Robert\_Petitto](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/robert_petitto/32/25193_2.png) [@Robert\_Petitto](https://community.glideapps.com/u/Robert_Petitto)\ **Post date:** [June 22, 2022, 3:59pm UTC](https://community.glideapps.com/t/action-with-many-to-relationships/43373/2 "2022-06-22T15:59:55Z")
You can use the relation from event to the user registration. I talk a bit about it here: [https://community.glideapps.com/t/experts-top-tips/39730/2?u=robert\_petitto](https://community.glideapps.com/t/experts-top-tips/39730/2) And here: [![](https://us1.discourse-cdn.com/flex002/uploads/glideapps/original/3X/7/1/710efd757d00cc0b9b980d772ac5503199299dd8.jpeg "Glide: TWO WAYS to Allow Users to RSVP, Register and Join") ](https://www.youtube.com/watch?v=IWZWB1hn3DU) ---
**Author:** ![Berengere](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/berengere/32/38587_2.png) [@Berengere](https://community.glideapps.com/u/Berengere)\ **Post date:** [June 23, 2022, 12:51pm UTC](https://community.glideapps.com/t/action-with-many-to-relationships/43373/3 "2022-06-23T12:51:51Z")
A very big thank you… 🙏 I was gravitating around the solution but I clearly couldn’t have found it on my own. The first link doesn’t work but the second video talk exactly about my problem. I followed the steps and it works. This is not the first time I see one of your tutorials and you know “some heroes don’t wear a cape”. Thank you so much ---
**Author:** ![Robert\_Petitto](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/robert_petitto/32/25193_2.png) [@Robert\_Petitto](https://community.glideapps.com/u/Robert_Petitto)\ **Post date:** [June 23, 2022, 3:12pm UTC](https://community.glideapps.com/t/action-with-many-to-relationships/43373/4 "2022-06-23T15:12:30Z")
Thanks for the kind words. Here’s the first link again: ---
**Author:** ![system](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/system/32/53398_2.png) [@system](https://community.glideapps.com/u/system)\ **Post date:** [June 24, 2022, 3:12pm UTC](https://community.glideapps.com/t/action-with-many-to-relationships/43373/5 "2022-06-24T15:12:59Z")
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