# Question about “choice” lists **URL:** \ **Category:** Ask for Help\ **Created:** [April 5, 2020, 1:43am UTC](https://community.glideapps.com/t/question-about-choice-lists/6431 "2020-04-05T01:43:39Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Jonathon\_Kohn](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jonathon_kohn/32/8593_2.png) [@Jonathon\_Kohn](https://community.glideapps.com/u/Jonathon_Kohn)\ **Post date:** [April 5, 2020, 1:43am UTC](https://community.glideapps.com/t/question-about-choice-lists/6431/1 "2020-04-05T01:43:40Z")
Is it possible to prevent a choice from being listed if it’s already been selected in a previous form? Students need to choose 1/6 planes, 1/3 instructors, and a date/time that hasn’t been selected yet. I’m wondering if this is possible via sheets + glide in any way… ---
**Author:** ![Jeff\_Hager](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jeff_hager/32/43_2.png) [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)\ **Post date:** [April 5, 2020, 3:38am UTC](https://community.glideapps.com/t/question-about-choice-lists/6431/2 "2020-04-05T03:38:39Z")
Look at the booking example in [https://concepts.glideapp.io/](https://concepts.glideapp.io/). Sound very similar to what you want. ---
**Author:** ![Jonathon\_Kohn](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jonathon_kohn/32/8593_2.png) [@Jonathon\_Kohn](https://community.glideapps.com/u/Jonathon_Kohn)\ **Post date:** [April 5, 2020, 4:39am UTC](https://community.glideapps.com/t/question-about-choice-lists/6431/3 "2020-04-05T04:39:55Z")
YES! Perfect example and thank you so much for sharing that link! I can add in the planes easy enough but for a student that wants to book a 8am time for 2 hours of flight time, is there a clever way to automatically book both 9am and 10am using the same variables without having to submit 3 total forms? ---
**Author:** ![Jonathon\_Kohn](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jonathon_kohn/32/8593_2.png) [@Jonathon\_Kohn](https://community.glideapps.com/u/Jonathon_Kohn)\ **Post date:** [April 5, 2020, 5:13am UTC](https://community.glideapps.com/t/question-about-choice-lists/6431/4 "2020-04-05T05:13:18Z")
Wondering if it would work better having the student choose an hour duration or an end time. I just need the button to remain “Unavailable” if someone tries to book a time during another booking’s duration. I’ll keep thinking 😉 ---
**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:** [April 5, 2020, 6:18am UTC](https://community.glideapps.com/t/question-about-choice-lists/6431/5 "2020-04-05T06:18:59Z")
Take a look at my booking app…it does what you’re asking: > **[Meet with Me](https://meetwithme.glideapp.io/)** > > A personalized booking app ---
**Author:** ![Jonathon\_Kohn](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jonathon_kohn/32/8593_2.png) [@Jonathon\_Kohn](https://community.glideapps.com/u/Jonathon_Kohn)\ **Post date:** [April 5, 2020, 1:35pm UTC](https://community.glideapps.com/t/question-about-choice-lists/6431/6 "2020-04-05T13:35:44Z")
Yes exactly!!! How are you handling the duration? ---
**Author:** ![Jeff\_Hager](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jeff_hager/32/43_2.png) [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)\ **Post date:** [April 8, 2020, 12:57am UTC](https://community.glideapps.com/t/question-about-choice-lists/6431/7 "2020-04-08T00:57:48Z")
> [@Meet with Me: A Booking App that Prevents Conflicts](https://community.glideapps.com/t/meet-with-me-a-booking-app-that-prevents-conflicts/5916/17): > > revolving_hearts Copy this App:zap Copy my Zap:gear Screenshot of Zap Configuration: