Click the floating plus icon in the lower right of a folder
Select "Tooltip Guide"
Enter a name for this tooltip
Add a URL rule where you want to place the tooltip
Select "Validation" from the tooltip types
Select a validation type from here
Capture the element where you want to apply validation
As we have shown the captured element as an email field, we will select "Email address format"
Enter a message for the users to follow
Select a suitable position
Publish this tooltip and it's respective parent folders
As soon as you will start typing something, a validation message will appear
These are simple validation types -