How to Let Webinar Attendees Pick a Time Slot in Sparkforge

If you run a webinar with multiple time options, you want one registration form, a slot picker, and an automatic confirmation email that names the slot the registrant chose. Here's the setup in Sparkforge.

What you'll build

1. A custom field that stores the chosen webinar slot.
2. A registration form that includes that field.
3. A workflow that sends a confirmation email — and optional reminders — on submission.

Step 1: Create a custom field for webinar slots

1. Open Settings > Custom Fields.
2. Click + Add Field.
3. Pick Dropdown or Radio Select.
4. Name it Choose Your Webinar Time.
5. Set Object to Contact.
6. Add slot options, for example: Tuesday 7PM, Thursday 2PM, Saturday 11AM.
7. Leave Allow Custom Values unchecked so registrants can only pick from your list.
8. Save.

Step 2: Add the field to a form

1. Go to Sites > Forms and create or edit a form.
2. From the Custom Fields tab, drag Choose Your Webinar Time onto the form.
3. Add the standard fields — First Name, Last Name, Email.
4. Save.

Registrants can now pick a slot when they sign up.

Step 3: Build the confirmation email workflow

Form settings only control on-page behavior — thank-you message, redirect, pixels. To send an email, use a workflow.

1. Open Automation > Workflows and click Create Workflow.
2. Add the trigger Form Submitted and select your webinar form.
3. Add a Send Email action.
4. Subject: Webinar Registration Confirmed.
5. Body example:

   Hi {{contact.first_name}},
   
   Thank you for registering. You selected: {{custom_values.choose_your_webinar_time}}
   
   Here's your webinar link: [Insert Zoom/Meeting Link]
   
   See you there.

6. Save and publish.

Every registrant now gets a personalized confirmation that names their chosen slot.

Step 4: Optional — slot-aware reminders

To send reminders before the webinar:

• In the same workflow, add Wait Until actions tied to the webinar time.
• Send reminders at 24 hours, 1 hour, and 10 minutes before.
• If you run multiple sessions, branch on the field with If/Else so each slot gets its own reminder schedule.