Examples

Display Menu Item only for admins

Condition 1User is [role]
Condition 1 Parameteradministrator

Display Menu Item only for users who can manage options

Condition 1If user can [capability]
Condition 1 Parametermanage_options

Display Menu Item only on front page

Condition 1On front page
Condition 1 Parameter – N/A (empty)

Display Menu Item only on Product Pages (custom post type: product)

Condition 1On a Post Type [type]
Condition 1 Parameterproduct

Display Menu Item for logged in users on Page 57

Condition 1If user is logged in
Condition 1 Parameter – N/A (empty)

Logical OperatorAND

Condition 2On a page
Condition 2 Parameter57

On this page