Using the Conditional Logic addon, you can hide or show fields on your form.
Pricing:
The addon costs $3.99 a month. But when subscribing annually the monthly cost is $3.19.
Thus, you save 20% for the annual subscription.
To activate the addon:
Go to Weebly Editor.
Click on the form and go to Settings.
Go to the Addons tab.
Select Conditional Logic and click Add.
When the add-on is added, click to open the Settings and set statements:
First, pick whether you want to show or hide the field if the condition is true.
In the next dropdown, select the field you want the condition to apply to.
Then, set the condition in the below dropdowns.
There are different conditions depending on the field type.