How can I conditionally display a checkbox in a blueprint?

How can I conditionally display a checkbox in a blueprint?

Hi,

I have a blueprint with a drop down field for next steps. On one branch of this, there is a checkbox that displays further fields.

Currently, I can make fields display conditionally by using a layout rule with 'Make field mandatory' (How I've done next contact date), however, this doesn't exist for checkboxes. As a result, the 'Follow up needed' checkbox is never hidden, even if a different lead next step is selected.

Does anyone have a work around or solution to this?

Many thanks in advance,
Lucas