Hi, please look at the attached graphic to help with the explanation.
I have one main plan (Treatment Guides - Modules 1 & 2) then I have multiple upgrade options (Treatment Guides - Module 4, Module 5, Module 6 etc.)
I want to make it so if a user selects 'Treatment Guides - Module 6' all other upgrades are below it (Treatment Guides - Modules 1, 2, 3, 4 & 5) are included as required). Currently if I select Module 6, it only ads the Main Plan & level 6 (PlansUpgrade2.jpg).