# Help with a Calendar App **URL:** https://community.glideapps.com/t/help-with-a-calendar-app/63804 **Category:** Ask for Help **Created:** [July 12, 2023, 9:27am UTC](https://community.glideapps.com/t/help-with-a-calendar-app/63804 "2023-07-12T09:27:37Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![ThinhDinh](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/thinhdinh/32/49_2.png) [@ThinhDinh](https://community.glideapps.com/u/ThinhDinh) #### Post date: [July 13, 2023, 12:24am UTC](https://community.glideapps.com/t/help-with-a-calendar-app/63804/2 "2023-07-13T00:24:21Z")
I think I would do this with a custom form. > [@How do I create a custom form?](https://community.glideapps.com/t/how-do-i-create-a-custom-form/25014): > > I’m just dropping this here so I have something to refer people to when they ask. This is a simple concept app (copyable), that demonstrates the following techniques: Building custom forms for adding and editing list items (as an alternative to the native forms provided by Glide) Preventing duplicate new entries using [User Specific Columns](https://docs.glideapps.com/all/reference/data-editor/user-specific-columns) and [Relations](https://docs.glideapps.com/all/reference/data-editor/computed-columns/relation-column) Enforcing mandatory input items The use of visibility conditions and user specific booleans to control user flow There is nothing particula… - Use an entry to fill the “first week” column. - Create 3 math columns called “2nd week”, “3rd week”, “4th week”. 2nd week formula: “First week” + 7 3rd week formula: “First week” + 14 4th week formula: “First week” + 21 - Add a switch pointing to a boolean column to store the “Repeat event for 4 weeks” value. Then on the Submit button, have 2 branches. If “Repeat event for 4 weeks” is checked \> Use 4 add row actions to iteratively add 4 rows with the corresponding “First week”, “Second week” and so on. If the column above is not checked \> Just add 1 row with the “First week” value. --- _[View the full topic](https://community.glideapps.com/t/help-with-a-calendar-app/63804)._