Parent of parent of another parent plan...

I have a problem with my plans...

my global settings at CB1.7 are:

Show subscription plans at registration: YES
Allow Free Registered Users (without subscriptions): NO
Create Subscriptions also for free lifetime plans: YES

Actually i have 2 TOP exslusive free Plans lifetime subscription where allow registration BUT NOT allow upgrade to this as user must select the "road" only at registration form.

Plans
Account Personal
Account Business

Each of these plans there are parent plants where
Account Personal
|Plan 1
|Plan 2

Account Business
|Plan 3

The settings of Plans 1,2,3 are:
Exclusive plan: Exlusive, other plansof same parent..., but one subscription is mandatory
Hide children plans if unselected: No, clildren plans always visible if any
Regular Price of plan:0 (Free)
Regular Validity duration: Lifetime subscription
Prorate remaining value of this plan when upgrading: YES
Allow registration:YES
Propose spontaneously plan at registration: YES: Show aut....
Allow upgrade to this: NO (Same concept of 2 TOP Plans)
Multiple subscriptions per user: Only one subscription at a time
Published:YES
Allow new subscriptions:YES
Allow access from site frontend:YES visible on the site
Visible for Group (and above this group): Public frond-end

Now i need another parent subscription under my plan3 but i can't see the other parents.
What i see is:
TOP
Account personal (Also TOP plan)
Account Business (Also TOP Plan)

I would like that:
Account Personal
|Plan 1
|Plan 2

Account Business
|Plan 3
|Parent of Plan 3
|Merchandise for users where subs Parent plan3

Is this possible to do?

My settings are correct?

Plans can only go 1 child level deep. Please see below examples.

Possible
Plan 1
-Plan 1a

Impossible
Plan 1
-Plan 1a
--Plan 1a1

We'll be reviewing better parent > child plan relationships with a future release to allow further depth. For now you can only go 1 plan deep.

Very good, what about if i want do this?

Account Business (Free Plan)
-Plan 1 (Free plan)
-Plan 2 (€99,00)1 year- Not registration - Upgrade only
-Merchandise (€29,90) 1 month Not registration - Upgrade only.

Merchndise must be available only if Plan 2 is active. How i can get this function?

Thanks in advance

Very good, what about if i want do this?

Being 1 level deep is perfectly doable. Simply set Plan 1, Plan 2, and Merchandise as having a parent of "Account Business" plan.

Merchndise must be available only if Plan 2 is active. How i can get this function?

Ensure you're using CBSubs 1.2.2 then on the Workflows tab configure the new Conditional feature which allows display of plans based off other plan activity or field values.